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An Advance Notice of (Proposed) Revision of &bdquo;Notification

1. 13 Add 500 uL when using ICP OES and dilute the solution to 1 1000 for ICP MS 6 If there are any residues separate them through centrifugation or filtration Use an appropriate method to check the existence of lead elements in the residue b Microwave decomposition 1 General decomposition method Put the weighed sample in a microwave digestion vessel and add 5mL of nitric acid A 2 2 c and 0 1 mL 1 0 mL of hydrogen peroxide A 2 2 e When the chemical reaction between the sample and acids has calmed down put a stopper on the vessel Assemble the microwave digestion system A 2 3 operate the microwave oven according to the pre set decomposition program to dissolve the sample Cool the vessel and move the solution into a 50 mL measuring flask then fill water up to the scale mark to dilute Dilute the sample solution with water to meet the appropriate concentration standard of each measuring tool If the internal standard substances A 2 2 j are being used add internal standard solution A 2 2 before diluting the solution in a flask Add 500 uL when using ICP OES and dilute the solution to 1 1000 for ICP MS 2 For irresoluble samples or samples containing silicon dioxide or titanium do as follows Put the weighed sample in a microwave digestion vessel and add 5mL of nitric acid A 2 2 c 1 mL of hydrofluoric acid A 2 2 g and 0 1 mL 1 0 mL
2. a General method to dissolve the sample Cover the glass beaker A 1 3 e 2 containing the sample with a watch glass Put 20 mL of mixed acid 1 A 1 2 n into it and heat until it dissolves Cool down to room temperature and then wash inside of the watch glass and the side of the beaker with water Remove the watch glass Move the solution into a 100 mL measuring flask A 1 3 e 3 and fill water up to the scale mark to dilute Dilute each sample solution with water to the appropriate concentration level of each measuring tool Put all sample solutions together to make the final solution Add Current Proposed Revision Remarks an internal standard element containing rhodium A 1 2 r and add water to the scale mark of the flask to dilute when necessary The type and amount of element are determined based on the selected method of analysis and each dilution process must be taken into account when calculating the result The dilutions made and additions of internal standard elements must be recorded in the test report b For samples containing tin Cover the glass beaker A 1 3 e 2 containing the sample with a watch glass Put 10 mL of mixed acid 3 A 12 p little by little into it Once the intense reaction has stopped slowly heat the beaker and dissolve completely Cool down to room temperature and then wash inside of the watch glass and the side of the beaker w
3. A 4 9 Calibration curve creation Creating a calibration curve varies based on the instrument to use a Atomic Absorption Spectrometry AAS Inject some of the prepared standard solution for calibration curve under optimal conditions into the air acetylene flame of the AAS to measure the atomic wavelength absorption of the lead element For the calibration curve method medium correction method create a curve as a calibration curve showing the relationship between the strength and concentration in the element spectral line The wavelength of lead element must be selected taking into account the typical measuring wavelength If there is interference due to coexisting substances the strength of the interference need to be corrected by selecting an interference free wavelength within the range of selected calibration or other appropriate means b Inductively Coupled Plasma Optical Emission Spectrometry ICP OES Inject some of the prepared standard solution for the calibration curve under optimal conditions into the argon plasma of the ICP OES to measure the strength of atomic spectral line of the lead element For the calibration curve method medium correction method create a curve as a calibration curve showing the relationship between the strength and concentration in the atomic spectral line For the internal standard method create a curve as a calibration curve showing the relationship between the sensitivity rati
4. A 4 3 Instruments and tools a Atomic Absorption Spectrophotometer AAS Consists of sample container nebulizer burner system with air acetylene burner head hollow cathode tube detector data processing and control system b Inductively coupled plasma Optical Emission Spectrometer ICP OES Consists of sample container plasma torch spray chamber nebulizer optical system detector control and data output system c Inductively coupled plasma Optical Mass Spectrometer ICP MS Consists of sample container plasma torch spray chamber nebulizer interface mass filter detector discharger control and data output system d Sample injection system that can stand against hydrofluoric acid A hydrofluoric acid proof sample injection system that is consisted of a sample injection part and a torch e Decomposition with aqua regia Automatic temperature control system container reflux condenser and absorption cell f Microwave digestion system A microwave sample decomposition system that basically has a sample container with a capacity of 40 mL and containers that are made of high pressure PTFE TFM PFA or other fluorinated carbon substances Note Each manufacturer and the model of the microwave system used at each laboratory have their own guidebooks for the safety and handling of the system The analyst must refer to the manual the manufacturer and relevant documents to be familiar with the proper and safe use
5. It is generally assumed that the sample consists of unknown compositions and the internal standard method sensitivity comparison method is recommended A standard addition method can be used if necessary If there is no disturbing element and the compositions of the sample are known the calibration curve method medium correction method can be used as well Note The acid must be adjusted to the concentration of the sample in all circumstances A 2 6 1 Preparation of solution for the calibration curve Take Oug 100u of lead standard solution gradually and put into a100 mL measuring flask A 2 3 e 3 When measuring with the internal standard addition method make sure the acid concentration of both the sample solution and the internal standard substance A 2 2 j calibration curve solution are the same A 2 6 2 Creating calibration curve Use the spectrometer for quantitative analysis Spray some of the prepared calibration curve solution into the argon plasma or into air acetylene flame If Measuring the samples that contain hydrofluoric acid use a sample introduction system that can stand hydrofluoric acid a Atomic Absorption Spectrometry AAS Quantitate by measuring the optical density of lead elements Create a curve that shows the relationship between the optical density and the concentration of lead elements as a calibration curve when using the calibration curve meth
6. c If there are any residues separate them through centrifugation or filtration Use appropriate method to make sure there are no remaining lead elements in the residue Note If there exists silver and a large amount of tin i e lead free solder melt with hydrofluoric acid and 10 mL of hydrogen peroxide little by little until it is completely dissolved A 1 5 Preparation of the base solution Prepare the base solution the same way as the sample solution was prepared using all reagents except for the sample A 1 6 Test operation If the composition of the sample is clearly known use the calibration curve method medium correction method Otherwise use the internal standard method sensitivity comparison method The standard addition method can be used if necessary Current Proposed Revision Remarks Note The internal standard method is not applicable for AAS Note A medium correction method is better for samples with high medium concentration Note If the effect of the medium is incorrect the medium must be removed by methods such as solvent extraction and ion exchange A 1 6 1 Preparation of the standard solution for calibration curve The following two methods can be used to prepare the standard solution for the calibration curve a Calibration curve method medium correction method Put a standard lead solution into 100 mL measur
7. measuring wavelength If there is interference due to coexisting substances the strength of the interference must be corrected by selecting an interference free wavelength within the range of selected calibration or other appropriate means b Inductively Coupled Plasma Optical Emission Spectrometry ICP OES Inject some of the prepared standard solution for a calibration curve under optimal conditions into the argon plasma of the ICP OES to measure the strength of atomic spectral line of the lead element For the calibration curve method medium correction method create a curve as a calibration curve showing the relationship between the strength and concentration in the atomic spectral line For the internal standard method create a curve as a calibration curve showing the relationship between the sensitivity ratio and concentration for the internal standard element When measuring a sample containing hydrofluoric acid use sample containers that can resist hydrofluoric acid The wavelength of lead element is selected from the spectral line The wavelength of lead element must be selected by taking into account the typical measuring wavelength A thorough study of the detection limit and accuracy must be carried out If there is any interference due to coexisting substances the degree of the interference must be corrected by selecting an interference free wavelength within the range of se
8. validity of lead concentration within metal accessories for children CPSC CH E1001 08 lt New gt Safety Certificate Standards Baby Carriages Annex Lead in other materials 14 A4 A 4 1 The principle Provided in this Annex are methods to quantitate lead content in materials other than high molecular materials and metal materials in baby carriages The most proper method among Atomic Absorption Spectrometry AAS Inductively Coupled Plasma Optical Emission Spectrometry ICP OES and Inductively Coupled Plasma Mass Spectrometry ICP MS can be chosen to quantitate leads Decompose the test sample with aqua regia or use microwave digestion method using chemicals such as nitric acid boron fluoride hydrogen peroxide and hydrochloric acid Use AAS or ICP OES for samples that have more than 10 mg kg of lead content and use ICP MS for samples that have more than 0 1 mg kg of lead content Note If HBF has lower purity use HF instead A 4 2 Reagents The concentration of the lead elements or of the disturbing elements in reagents and water etc must be negligibly low compared to the detection limit Also the reagents for ICP MS analysis must be high purity acids or chemical compounds and have less than 1 10 m m of trace metals a Water Use the first class water that is stipulated in KS M ISO 3696 Trace Metal grade total amount less than 10 ppb b H
9. an internal standard element containing rhodium A 1 2 r and add water to the scale mark of the flask to dilute when necessary The type and amount of element are determined based on the selected method of analysis and each dilution process must be taken into account when calculating the result The dilutions made and additions of internal standard elements must be recorded in the test report b For samples containing tin Cover the glass beaker A 1 3 e 2 containing the sample with a watch glass Put 10 mL of mixed acid 3 A 12 p little by little into it Once the intense reaction has stopped slowly heat the beaker and dissolve completely Cool down to room temperature and then wash inside of the watch glass and the side of the beaker with water Remove the watch glass Add 10 mL of sulphuric acid A 1 2 h and heat until white lead is being generated from the sulphuric acid Cool for a few minutes add 20 mL of hydrobromic acid A 1 2 1 and reheat until white lead is being generated Repeat this process 3 times and cool to room temperature Then add 10 mL of nitric acid A 1 2 b to liquefy soluble salts in it Cool to room temperature then move the solution into a 100 mL measuring flask A 1 3 e 3 and fill water up to the scale mark to dilute Dilute each sample solution with water to appropriate concentration level of each measuring tool Put all sample solutions together to make the final solution Add an internal stand
10. grade g Phosphoric acid p H3PQ 1 69 g mL more than 85 m m Trace Metal grade h Sulphuric acid p H SO 1 84 g mL 95 m m Trace Metal grade i Weak Sulphuric acid 1 2 dilute strong sulphuric acid A 1 2 h with water A 1 2 a and ratio of 1 2 by volume j Hydrofluoric acid p HF 1 18 g mL 40 m m Trace Metal grade k Hydrochloric acid p HCD 1 16 g mL 37 m m Trace Metal grade D Hydrobromic acid p HBr 1 48 mL 47 49 m m Trace Metal grade m Boric acid H3 BQ 1 48 mg mL 5 m m Trace Metal grade n Mixed acid 1 Hydrochloric acid A 1 2 k Nitric acid A 1 2 b Water A 1 2 a 2 1 2 o Mixed acid 2 Nitric acid A 1 2 b Hydrofluoric acid A 1 2 j 1 3 Mixed acid 3 Hydrochloric acid A 1 2 k Nitric acid A 1 2 b 3 1 Current Proposed Revision Remarks q Lead standard solution 1 000 mg L r Internal standard solution The internal standard elements must not interfere with the analyte Also the internal standard elements in the sample solution must be in negligible quantity Sc In Tb Lu Re Rh Bi and Y can be used as the internal standard elements Note The toxicity of each reagent used in this method cannot be determined exactly However each chemical compound must be considered as a potential health threatening element
11. A 2 4 Sample preparation A 2 4 1 Test sample It is better to start with the largest available quantity of the sample depending on the selected decomposition method When sampling with acid decomposition take 400 mg of cut and grinded sample precisely to every 0 1mg When sampling with dry ashing or acid decomposition with airtight containers grind trim or cut the sample and take 200 mg precisely to every 0 1mg A 2 4 2 Preparation of test solution a Dry ashing If the sample does not contain a halogen element follow the method below 1 Put the weighed sample in a crucible and heat on a heating plate 2 Heat the crucible inside a well ventilated hood with burner Be careful that the sample does not catch fire 3 Heat slowly until volatile matters that were generated while the sample was being carbonized to charcoal are completely discharged and only ashes are left 4 Put the crucible containing the sample into an electric furnace of 550 25 C Leave the furnace door ajar to supply enough air for oxidization 5 Continue to heat until the carbon completely oxidizes and only ashes are left 6 Take the crucible out of the electric furnace and cool to room temperature 7 Add 5 mL of nitric acid A 2 2 c and heat slowly to dissolve the residues Move this solution into a 50 mL measuring flask A 2 3 e 3 and add water up to the scale mark to dilute Dilute the sample solution to have an appropriate concentration for the meas
12. C The lead concentration in the sample mg kg A The lead concentration in the sample solution mg L A The lead concentration in the base test solution mg mL V Total volume of the sample solution mL m Amount of the sample g lt New gt Safety Certificate Standards Baby Carriages Annex Lead in painted or coated materials 14 A3 A 3 1 The principle In this method separate the painted and coated surface according to 5 4 and then quantitate the total lead contents A 3 2 Instruments and tools a Disposable plastic containers for digestion or glass test tubes 50 mL b Heating plates with holes to place test tubes in A 3 3 Reagents a Deionized water b Nitric acid c Methylene chloride A 3 4 Operation a Put approximately 30 mg 50 mg of sample prepared from 5 4 painted and coated part into a 50 mL beaker b Get paint standard material NIST SRM 2581 powdered paint 0 5 of lead and operate as the same way as the sample c Dissolve the sample accordingly to AOAC 974 02 or ASTM E 1645 d Dilute the sample to make the concentration of lead be fitted within the range of the calibration curve e Quantitate the lead within the sample solution according to ASTM E 1613 In this case the ICP analysis must be valid for the public announcements from CPSC guidelines for the process to quantitate leads and the guidelines for 54
13. Element Pb Sb As Ba Cd Cr Hg Se Follow the Safety Certification Standards Annex 9 A3 mee a ee Oe tee ane ae ae SON 4 2 1 2 4 Leads in other base material Follow the Safety Certification Standards Annex 9 A4 4 2 1 3 Effluent of harmful elements Example Operate according to the rules in KS G ISO 8124 3 f 4 2 1 4 Phthalate plasticizer Follow Safety If Pb weighs 120 mg kg Certification Standards Annex 9 C for Diethylhexylphthalate DEHP dibutylphthalate Apply 30 of correction ratio for Pb a BGE NLE BA contents e The equation for Pb test result calculation could be 120 120 30 100 84 4 2 2 Formaldehyde content follow KS K 0611 4 2 2 Detecting formaldehyde Measure the amount of free formaldehyde according to KS K 0611 A 4 2 3 Corrosion resistance of metallic coatings 4 2 3 Corrosion resistance of metallic coatings Changed from Take the major metallic coating part apart soak it obligation to in 5 sodium chloride water solution 20 5 C commendat for 2 hours and check whether it rusts 1 hour after ion removing it from water Recommendation Current Proposed Revision Remarks lt New gt Safety Certificate Standards Baby Walking Frames Annex Lead in metal base materials 9 A1 A 1 1
14. Trace Metal grade f Hydrochloric acid p HCD 1 19 g mL 37 m m Trace Metal grade Hydrofluoric acid p HF 1 18 g mL 40 m m Trace Metal grade h Boric acid H3BQ3 5 m m 50 mg mL Trace Metal grade i Standard solution of lead 1 000 mg L Internal standard substances Use internal standard substances that do not disturb the analyte and a small quantity of internal standard element Typically Sc In Tb Lu Re Rh Bi and Y are used as the internal standard elements Usually Sc and Y are recommended for ICP OES Concentration must be lower than 1 000 mg kg Note The toxicity of each reagent used in this method cannot be determined 49 exactly However each chemical compound must be considered as a potential health threatening element Therefore it is recommended to reduce exposure to those chemicals as much as possible Note _Pre processing with strong acids can cause corrosions and burns Lab coats gloves and goggles must be worn when dealing with acids Note Nitric acid may generate toxic gas Always add acid into the sample inside an air exhauster hood Note Gases from plasma must come out through air exhauster hood Note A special measure must be taken when using hydrofluoric acid For example if hydrofluoric acid has contacted the skin wash it thoroughly with water for more than
15. injection part and a torch e Decomposition with aqua regia Automatic temperature control system container reflux condenser and absorption cell f Microwave digestion system A microwave sample decomposition system that basically have a sample container with a capacity of 40 mL and containers that are made of high pressure PTFE TFM PFA or other fluorinated carbon substances Note Each manufacturer and the model of the microwave system used at each laboratory have their own guidebooks for the safety and handling of the system The analyst must refer to the manual the manufacturer and relevant documents to be familiar with the proper and safe use of the system g Scale Must be able to measure precisely up to 0 1mg h Glassware Wash all glassware with 10 by volume nitric acid 10 3 h 56 before using 1 Beakers 100 mL 200 mL 500 mL etc 2 Measuring flasks 100 mL 200 mL 500 mL etc Other kinds of volume measuring tools can be used provided that they are precise and accurate 3 Pipettes ImL 5 mL 10 mL 20 mL etc 4 Cylinders 1mL 5 mL 10 mL etc 5 Watch glasses i Micro pipettes 200 uL 500 uL 1000 uL etc j Wash PTFE or PFA devices with 10 by volume nitric acid A 4 2 h before using 1 Beakers 100 mL 200 mL 500 mL etc 2 Measuring flasks 100 mL 200 mL etc k Heating plats or sand baths ID Microwave digestion system 4
16. the calibration curve and measure again Check the precision of measurement at regular intervals with standard substances calibration curve solution etc per every 10 samples Re create the calibration curve if necessary lt A Linear Regression Line with more than 0 998 of linear coefficient R can be used for the initial calibration If the check result of calibration standard i e standard substance standard solution etc differs more than 20 from the expected value measure all relevant calibration standards and samples again gt A 4 11 Calculation Obtain the strength of spectrum for lead element and then calculate the concentration mg kg of lead element in the sample according to the equation below C A A2 m V C The lead concentration in the sample mg kg A The measured lead concentration from sample solution mg L A The measured lead concentration from base test solution mg mL V Total volume of the sample solution mL m Amount of the sample g Note The above equation is generalized because the first dilution of test solution is applied due to the potential diversity of analysis methods in this section Keep in mind that all of the dilution must be included for the calculation 61 lt New gt Safety Certificate Standards Baby Carriages Annex Phthalate Plasticizer 14 C C 1 The principle Measure ph
17. 2 1 2 o Mixed acid 2 Nitric acid A 1 2 b Hydrofluoric acid A 1 2 j 1 3 43 Current Proposed Revision Remarks Mixed acid 3 Hydrochloric acid A 1 2 k Nitric acid A 1 2 b 3 1 q Lead standard solution 1 000 mg L r Internal standard solution The internal standard elements must not interfere with the analyte Also the internal standard elements in the sample solution must be in negligible quantity Sc In Tb Lu Re Rh Bi and Y can be used as the internal standard elements Note The toxicity of each reagent used in this method cannot be determined exactly However each chemical compound must be considered as a potential health threatening element Therefore it is recommended to reduce exposure to those chemicals as much as possible Note Pre processing with strong acids can cause corrosion and burns Lab coats gloves and goggles must be worn when dealing with acids Note Nitric acid may generate toxic gas Always add acid into the sample inside an air exhauster hood Note Gases from plasma must come out through the air exhauster hood Note A special measure must be taken when using hydrofluoric acid For example if hydrofluoric acid has contacted the skin wash thoroughly with water for more than 5 minutes and apply an antidote ointment water soluble gel with 2 5 calcium gluconate to the skin as a first aid t
18. 4 3 10 Joining parts and locking devices Omitted When tested with the method specified in 5 3 8 1 the handle bar must not move more than 15 degree from the lock position toward the baby Also tested with 5 3 8 1 the locking device must not be unlocked and must not have any damage that will hamper the functionality and operation of the locking device 4 3 10 1 There must be at least two locking devices on a folding system of baby carriages except baby carriages pertinent to 4 3 10 2 One of them must work when an infant is placed into the 4 3 7 Joining parts and locking devices The same as at present Oi AT Or GREE RAVE OME OSE CAP SERS Changed the places 30 Current Proposed Revision Remarks carriage Also at least one of the locking devices must automatically work when the baby carriage opens for use Note Baby carriages that can be folded with lock unlock and a locking device and baby carriages that can be folded with two simultaneous movements from both sides are all considered as having two lock devices When tested according to 5 3 8 even if one of the locking devices were unlocked the folding system must not work to any direction in a way the baby s finger to be jammed by another locking device 4 3 10 2 A user must be able to fold a simplified carriage with hinged link of which the centre part is moving geometrically to hold the carriage in normal use po
19. 5 minutes and apply an antidote ointment water soluble gel with 2 5 calcium gluconate to the skin as a first aid and then see a doctor If it requires long term care foods containing lots of calcium will be good for healing A 2 3 Instruments and tools a Atomic Absorption Spectrophotometer AAS Consists of sample container nebulizer burner system with air acetylene burner head hollow cathode tube detector data processing and control system b Inductively Coupled Plasma Optical Emission Spectrometer ICP OES Consists of sample container plasma torch spray chamber nebulizer optical system detector control system and data output system c Inductively Coupled Plasma Optical Mass Spectrometer ICP MS Consists of sample container plasma torch spray chamber nebulizer interface mass filter detector discharger control system and data output system d Scale Must be able to measure precisely up to 0 1mg e Glassware Wash all glassware with 10 by volume nitric acid before using 1 Kjeldhal flasks 100 mL 2 Beakers 100 mL 200 mL etc 3 Measuring flasks 100 mL 200 mL 500 mL etc Other measuring tools can be used provided they are precise and accurate 4 Single channel pipettes 1mL 5 mL 10 mL 20 mL etc 5 Funnels 6 Watch glasses f Platinum crucibles 50 mL 150 mL etc g Porcelain crucibles 50 mL 150 mL etc h Micro pipettes 10uL 100 uL 200 uL etc i Heating plates o
20. Nitric acid c Methylene chloride A 3 4 Operation a Put approximately 30 mg 50 mg of sample prepared from 5 4 painted and coated part into a 50 mL beaker b Take paint standard material NIST SRM 2581 powdered paint 0 5 of lead and operate the same way as the sample c Dissolve the sample accordingly to AOAC 974 02 or ASTM E 1645 d Dilute the sample to make the concentration of lead be fitted within the range of the calibration curve e Quantitate the lead within the sample solution according to ASTM E 1613 In this case the ICP analysis must be valid for the public announcements from CPSC guidelines for the process to quantitate leads and the guidelines for validity of lead concentration within metal accessories for children CPSC CH E1001 08 lt New gt Safety Certificate Standards Baby Walking Frames Annex Lead in other materials 9 A4 A 4 1 The principle Provided in this Annex are methods to quantitate lead content in materials other than high molecular materials and metal materials in baby walking frames The most proper method among Atomic Absorption Spectrometry AAS Inductively Coupled Plasma Optical Emission Spectrometry ICP OES and Inductively Coupled Plasma Mass Spectrometry ICP MS can be chosen to quantitate leads Decompose the test sample with aqua regia or use the microwave digestion method using chemicals such as nitric acid boron
21. The principle Provided in this Annex are methods to quantitate lead content in baby walking frames that have metal as their base material Atomic Absorption Spectrometry AAS Inductively Coupled Plasma Optical Emission Spectrometry ICP OES Inductively Coupled Plasma Mass Spectrometry ICP MS and some of chemical sample preparation methods are provided Dissolve the sample using acids such as hydrochloric acid or nitric acid and then quantitate lead content with AAS ICP OES ICP MS etc Note Poisonous and dangerous substances are used in this method therefore the detailed precautions below must be followed A 1 2 Reagents The concentration of the analyte and disturbing elements in reagent and water etc must be negligibly low compared to the detection limit a Water Use the first class water that is stipulated in KS M ISO 3696 for all sample solution preparations and dilution b Nitric acid p HNO3 1 4 g mL 65 m m Trace Metal grade c Weak nitric acid 1 2 dilute strong nitric acid A 1 2 b with water A 1 2 a to ratio of 1 2 by volume d Boron fluoride HBF 50 m m Trace Metal grade Or solution of boric acid A 1 2 m 75g dissolved in 200 mL of 40 m m hydrofluoric acid A 1 2 can be used e Hydrogen peroxide p H202 1 10 g mL 30 m m Trace Metal grade f Perchloric acid p HCIO 1 67 g mL 70 m m Trace Metal
22. Therefore it is recommended to reduce exposure to those chemicals as much as possible Note Pre processing with strong acids can cause corrosion and burns Lab coats gloves and goggles must be worn when dealing with acids Note Nitric acid may generate toxic gas Always add acid into the sample inside an air exhauster hood Note Gases from plasma must come out through the air exhauster hood Note A special measure must be taken when using hydrofluoric acid For example if hydrofluoric acid has contacted the skin wash thoroughly with water for more than 5 minutes and apply an antidote ointment water soluble gel with 2 5 calcium gluconate to the skin as a first aid then see a doctor If it requires a long term care foods containing lots of calcium will be good for healing A 1 3 Instruments and tools a Atomic Absorption Spectrophotometer AAS Consists of sample container nebulizer burner system with air acetylene burner head hollow cathode tube detector data processing and control system b Inductively coupled plasma Optical Emission Spectrometer ICP OES Consists of sample container plasma torch spray chamber nebulizer optical system detector control and data output system c Inductively coupled plasma Optical Mass Spectrometer ICP MS Consists of sample container plasma torch spray chamber nebulizer interface mass filter detector discharge
23. and the sample solutions If the concentration of the sample solution is higher than the calibration curve dilute the sample solution to be within the range of the calibration curve and measure again Check the precision at regular intervals with standard substances calibration curve etc per every 10 samples Re create the calibration curve when necessary Note When the sample solution has been diluted within the range of the calibration curve adjust the internal standard concentration in the diluted solution to the concentration of the standard solution A 1 8 Calculation Obtain the strength of the spectral line of the lead element from the sample solution in A 1 7 and the amount of lead element from the calibration curve Then calculate the lead element content mg kg with the equation below C A A m V C The lead concentration in the sample mg kg A The measured lead concentration in the sample solution mg L A The measured lead concentration in the base test solution mg L V Total volume of the sample solution mL m Amount of the sample g 48 lt New gt Safety Certificate Standards Baby Carriages Annex Lead in high molecular base materials 14 A2 A 2 1 The principle Defined in this annex are methods to quantitate lead contents in high molecular base materials used for baby carriages Choose the most proper method
24. babies If the box type hammock is structured for several babies test with a number of 9 kg mass models according to the method in 5 4 2 2 2 one per every position If the Type A or Type B baby carriage is structured for several babies test with a number of 15 kg mass models according to the method in 5 4 2 2 3 one per every position If the baby carriage is structured for several babies and a box type hammock and other hammocks can be installed together on the frame test this combination with 9 kg and 15 kg mass models The box type hammock and other hammocks can be combined in the most vulnerable condition Note When the number of models in the carriage is less than total number of mass models it could be the most vulnerable condition A light weighted wedge can be used to fix the mass model if necessary 40 Current Proposed Revision Remarks 5 4 8 Acceleration of vibration Load a weight 5 4 8 Acceleration of vibration mode properly inthe hammock Attach an _ _ the abdomen of the model accelerometer to the centre of seat and axle Perform vibration and shock test for front wheels Rotate front wheels and rear wheels with a tester and rear wheels then measure the acceleration of shown in Figure 15 respectively
25. calibration curve that shows the relationship between intensity and concentration of lead elements For the standard addition method create a calibration curve that shows the relationship between intensity ratio and concentration of lead elements as a calibration curve c Inductively Coupled Plasma Mass Spectrometry ICP MS Quantitate by measuring the charge number against the mass of lead elements For the calibration curve method create a calibration curve that shows the relationship between the ratio of mass charge number and concentration of lead elements A 2 7 Measure of the sample Measure the base solution and sample solution after the calibration curve has been created If the concentration of the sample is higher than the calibration curve dilute the sample solution to be within the range of the calibration curve and 53 measure again Check the precision at regular intervals with standard substances calibration curve solution etc once per every 10 samples Re create the calibration curve when necessary Note When the sample solution has been diluted within the range of calibration curve adjust the internal standard concentration in the diluted solution to concentration of the standard solution A 2 8 Calculation Calculate lead element content mg kg within the sample with the equation below C A A m V
26. correction method create a curve that shows the relationship between strength and concentration in the lead element 47 Current Proposed Revision Remarks spectral line as a calibration curve For the internal standard method create a curve showing the relationship between the sensitivity ratio and concentration of lead for internal standard element as a calibration curve When measuring the sample containing hydrofluoric acid use sample containers and torches that can stand hydrofluoric acid The wavelength is selected from the spectral line of lead element If there is interference due to co existing substances select an interference free wavelength within the range of selected calibration or the interference level must be corrected by appropriate means c Inductively Coupled Plasma Mass Spectrometry ICP MS Spray the sample solution into the argon plasma through the spray chamber When measuring the samples containing hydrofluoric acid use sample containers and torches that can stand hydrofluoric acid Read the value of the mass versus electric charge of lead and measure the internal standard elements Calculate the ratio of the measured values to that of the measuring element for the internal standard elements A 1 7 Measuring the sample Once the calibration curve has created measure the base solution for calibration
27. exactly However each chemical compound must be considered as a 11 potential health threatening element Therefore it is recommended to reduce exposure to those chemicals as possible Note Pre processing with strong acids can cause corrosions and burns Lab coats gloves and goggles must be worn when dealing with acids Note Nitric acid may generate toxic gas Always add acid into the sample inside an air exhauster hood Note Gases from plasma must come out through air exhauster hood Note A special measure must be taken when using hydrofluoric acid For example if hydrofluoric acid had smudged on skin wash it thoroughly with water for more than 5 minutes and apply an antidote ointment water soluble gel with 2 5 calcium gluconate to the skin as a first aid and then see a doctor If it requires long term care foods containing lots of calcium will be good for healing A 2 3 Instruments and tools a Atomic Absorption Spectrophotometer AAS Consists of sample container nebulizer burner system with air acetylene burner head hollow cathode tube detector data processing and control system b Inductively Coupled Plasma Optical Emission Spectrometer ICP OES Consists of sample container plasma torch spray chamber nebulizer optical system detector control system and data output system c Inductively Coupled Plasma Optical Mass Spectrometer ICP MS Co
28. fill up the n hexane up to the scale mark and shake to mix well This will serve as a standard undiluted solution Dilute the standard undiluted solution properly to prepare diluted standard solution for each concentration C 1 5 Preparation of the base solution Prepare with the same way as to prepare the sample solution but do not put the sample in C 1 6 Measuring the samples Inject 1 uL of test solution into Gas Chromatography Mass Spectrometer Perform the same process for phthalic acid at the same condition Create a calibration curve at the peak area compare it to the peak area from the test solution and then quantitate the sample 1 Gas Chromatograph a Detector Mass analyzing detector b Column J amp W DB 1 inner diameter 0 25 thickness 0 1 m length 30 m or equivalent ones c Carrier gas Helium gas with purity of 99 9 or more d Column temperature 100 C 270 C e Injector temperature 325 C f Detector temperature 280 C g Carrier gas flux 1 0 mL min h Sample injection amount 1 uL split less mode 2 Mass Spectrometer a Ionization part Electronionization EI b Analyzer part quadrupole c Detection range 50 m z 500 m z Note The condition of detector column etc can be changed according to the instrument and analysis C 1 7 Calculation The concentration of sample and calibration curve that has been recorded in the base test solution is used to obtain the amo
29. fluoride hydrogen peroxide and hydrochloric acid Consumer Product Safety Commission 17 Use AAS or ICP OES for samples that have more than 10 mg kg of lead content and use ICP MS for samples that have more than 0 1 mg kg of lead content Note If HBF has lower purity use HF instead A 4 2 Reagents The concentration of the lead elements or of the disturbing elements in reagents and water etc must be negligibly low compared to the detection limit Also the reagents for ICP MS analysis must be high purity acids or chemical compounds and have less than 1 10 m m of trace metals a Water Use the first class water that is stipulated in KS M ISO 3696 Trace Metal grade total amount less than 10 ppb b Hydrochloric acid p HCD 1 16 g mL 37 m m Trace Metal grade c Weak hydrochloric acid 1 2 dilute strong hydrochloric acid A 4 2 b with water A 4 2 a to ratio of 1 2 Trace Metal grade d 5 m m hydrochloric acid solutions Trace Metal grade e 10 m m hydrochloric acid solutions Trace Metal grade f Nitric acid p HNO3 1 4 g mL 65 m m Trace Metal grade g 0 5 mol L nitric acid solution Trace Metal grade h 10 nitric acid solutions Trace Metal grade i Mixed acid HCI A 4 2 b HNO A 4 2 f 3 1 D 50 m m boron fluorides HBF Trace Metal grade k Hydrogen pe
30. the interference must be corrected by appropriate means lt A Linear Regression Line with less than 0 998 of linear coefficient R can be used for the initial calibration If the difference between the expected value and the result of the checked standard i e standard substance standard solution etc is greater than 20 all relevant calibration materials and samples must be measured again b Inductively Coupled Plasma Optical Emission Spectrometry ICP OES Inject some of the prepared standard solution for the calibration curve into the argon plasma of the ICP OES under optimal conditions and measure the atomic wavelength absorption of the lead element For the calibration curve method medium correction method create a curve that shows the relationship between strength and concentration in the lead element Current Proposed Revision Remarks spectral line as a calibration curve For the internal standard method create a curve showing the relationship between the sensitivity ratio and concentration of lead for the internal standard element as a calibration curve When measuring samples containing hydrofluoric acid use sample containers and torches that can stand hydrofluoric acid The wavelength is selected from the spectral line of lead element If there is interference due to co existing substances select an interference free wavelength within the range of selec
31. 0 mL 100 mL etc A 4 4 Preparation of sample The pre processing of the samples described in this section does not apply to all parts which are not made of metals and high molecular materials Generally hydrochloric acid nitric acid or mixed acid are used For samples that are difficult to dissolve with those acids add perchloric acid sulphuric acid etc wherever necessary However keep in mind that use of sulphuric acid carries the risk of losing lead elements and therefore seriously affects quantitative test of lead The sample must be completely dissolved without residue by heating at high temperature If there are any residues check if they contain lead elements with other analyzing method e g XRF or completely dissolve the residues with other decomposition methods use alkali melting or airtight pressurized container Mix the solution that has been processed with this method to undiluted solution and proceed to the lead analysis A 4 5 Test sample a Dissolve with aqua regia Put approximately 2g of powdered sample maximum particle size 250 um into a reaction vessel and add 22 5 mL of hydrochloric acid A 4 2 b and 7 5 mL of nitric acid A 4 2 f Set up reflux condenser and absorption cell containing 10 mL of 0 5 mol L nitric acid A 4 2 g on the reaction vessel Dissolve for 12 hours at room temperature and then for 2 hours at 120 C Cool to room temperature and
32. 000 for ICP MS If there are any residues separate them through centrifugation or filtration Check the residues with appropriate method e g XRF to see if there are remaining leads When it is not possible to use a test instrument described in this section another simple method can be used if the tester trusts its compatibility Errors generated from the provided test operation must be verified and be recorded in the test report The following is the procedure for the simple method Cover the glass beaker containing the sample with a watch glass then put mixed acid A 4 2 i into the beaker and heat for 2 hours at 120 C Leave it at room temperature for 12 hours wash the bottom of the watch glass and inner wall of the beaker with water and then remove the watch glass If there are insolubles filter the sample solution with a 0 45 um glass microfiber strainer Wash the insolubles with 5 m m hydrochloric acid solution A 4 2 d Move the resulting solution into a 100 mL measuring flask and add water to the scale mark to dilute The final solution will be used for the next measurement b Digestion with microwave Put approximately 200 mg of powdered sample maximum particle size 250 um into PTFE TFM PFA or other containers made of fluorocarbon A 4 3 j 2 Add 4 mL of nitric acid A 4 2 f 2 mL of boron fluoride A 4 2 j 1 mL of hydrogen p
33. 6 Stopper A stopper that prevents the wheels from rolling must be equipped The stopper control must be out of the baby s reach when the baby is safely seated on the seat It must be located in a place where the operating person can handle easily without putting a hand on it For example the operator must be able to handle the stopper with a foot 4 3 4 Stopper_ The same as at present Changed the place 4 3 7 Opening Other than easily movable parts and parts that become wider when moving there must not be any injurious openings that are more than 5mm and no more than 13mm within a reachable distance from the baby s limbs Other harmful openings must be covered with protection cover to prevent injuries However the openings which have less than 10 mm of depth are excluded Reflected EN standards 4 3 8 Horizontal angle of the back When the front wheels are lifted 200mm the horizontal angle of the carriage s rear must be greater than 5 However box type hammocks and some Type A carriages which structured with slip protections on right left and rear side of backrest that are higher than 10cm are excluded 4 3 6 Horizontal angle of the back Added Type B baby carriages 4 3 9 Products that are sold in parts General consumers must be able to assemble products that are sold in parts without difficulty lt Deleted gt Changed to recommendat ion
34. Korean Agency for Technology and Standards Public Announcement No 2009 121 We hereby announce in accordance with Article 41 Paragraph 1 of the Administrative Procedures Act the intent and the key elements of the following revision of Notification of Safety Standards of the Industrial Products subject to Safety Certification in compliance with Article 14 Safety Certification etc Paragraph 2 of the Quality Management and Safety Control of Industrial Products Act and the provisions stipulated in Appendix 1 that is related to Article 2 of Enforcement Regulation of the same Act in order to notify the industry and citizens in advance and to collect public opinions April 29 2009 Administrator Korean Agency for Technology and Standards An Advance Notice of Proposed Revision of Notification of Safety Standards of the Industrial Products subject to Safety Certification 1 The intent of the Revision This revision has been proposed to improve safety certification standards in order to strengthen safety control of harmful chemical substances such as phthalate plasticizer lead etc used for carriages and walking frames for babies while minimizing mandatory safety requirements 2 Main contents O Newly added safety requirements of phthalate plasticizer for the parts which may be touched by the infant and complementary test method for 8 harmful chemical substances including lead O Changed self observable safety requireme
35. ainer and filter with a glass microfiber strainer into 25 mL measuring flask Wash with 5 hydrochloric acid solution A 4 2 d and dilute to the scale mark If there are any residues check with an appropriate method to see if there are remaining lead elements in the residue The operation process described above is the minimum requirement for a microwave digestion system and need to test 2 3 time per sample Note It is recommended to not put more than 200 mg of powdered sample in a container The mixture of powdered test sample and nitric acid HBFy hydrogen peroxide hydrochloric acid reacts quickly and intensely to generate carbon dioxide and nitrogen oxide This will cause the increase of pressure in the container A safety device of the micro oven can react and the container can be opened due to the sudden high pressure Also elements of the analyte can be lost and in the worst case it can explode Therefore when reagents are added to the sample leave it until the reaction stops and then set up the system Note The same amount and kind of acid must be used when testing the same sample 2 3 times 58 A 4 6 Test process Use the calibration curve method to measure the sample The internal standard method sensitivity comparison method is used for ICP MS Note The standard addition method can be used to increase the reliability of the test meth
36. alytical laboratory use Specification and test methods 3 2 Materials 3 2 Materials 3 2 1 The harmful elements test results for tables 3 2 1 Harmful elements The harmful elements test plastic products and parts that were coated with results for tables plastic products and parts that synthetic resin paints must fit the following were coated with synthetic resin paints must fit the standards However casters and rings are following standards However casters and rings excluded are excluded Harmful Element Standard mg kg Harmful 3 2 1 1 Effluent of harmful elements The Element Standard mg kg materials used for walking frames must be suited to Lead Pb the table below Added ie Antimony Sb ORI Arsenic As Table Permitted effluent limits of certain elements safety Barium Ba Below 90 in walking frame materials Unit mg kg requirements Bowe for plasticizer Below 25 Element Standard Element Standard P Below 1 000 Cadmium Cd Antimony Sb Chromium Cr Arsenic As Mercury Hg Barium Ba Selenium Se Cadmium Cd Below 60 Below 75 Below 25 Below 60 Below 1 000 Below 60 Below 75 Chromium Cr Below 500 Lead Pb Mercury Hg Selenium Se Below 60 Below 90 Below 60 Below 500 Current Proposed Revision Remarks 3 2 1 2 Phthalate plasticizer The contents of diethylhexylphthalate DEHP dibutylphthalate DBP and Butylbenzylphthalate BBP in plastic materials used f
37. and measure the vibration acceleration of vibration to each perpendicular direction Then produce a ratio with the equation below For two seaters test each seat with weight models on separately Produce the ratio using Simplified the larger acceleration between two seats If there is a expression backrest test with the backrest fully reclined If the carriage does not have an axle attach an accelerometer to the very foot of frame that is connected with wheel Acceleration at the seat G Acceleration at the axle G 100 5 4 10 Impact durability Load a weight model 5 4 10 Impact durability Load a 9 kg mass model on the hammock and secure it with the seat belt on the box type hammock and a 15 kg mass model Let the hammock roll freely from a 10 inclined on the Type A or Type B baby carriages and secure plane facing downward as in Figure 16 Repeat the models with seat belts If any basket or the this 10 times similar items to carry objects are installed put in Do the same towards the opposite direction some items that correspond to the user manual and Reflected the weigh at least 2kg at the centre of the basket Letit EN standards roll freely from 10 inclined plane facing downward as in Figure 16 Repeat this 10 times Do the same towards the opposite direction Note Make sure the carriage would not be overturned during the test lt New gt 8 Recommendations 8 1 Materials 8 1 1 Bursting strength Bursting strength of fabri
38. ard element A 1 2 r containing rhodium and add water to the scale mark of the flask to dilute when necessary The type and amount of element are determined based on the selected method of analysis Each dilution process must be taken into account when calculating the result The dilutions made and additions of internal standard elements A 1 2 r must be recorded in the test report Another method is to dissolve 1g of the sample using water 40mL nitric acid A 1 2 b 12 mL and boron fluoride A 1 2 d 6mL or a solution that has 75g of boracic acid 5 5 3 2 m melted into 200 mL of hydrofluoric acid A 1 2 j 40 m m In this case use PTFE or PFA beakers or PFA measuring flask c If there are any residues separate them through centrifugation or filtration Use an appropriate method to make sure there are no remaining lead elements in the residue Note If there exists silver and a large amount of tin i e lead free solder melt with hydrofluoric acid and 10 mL of hydrogen peroxide little by little until it is completely dissolved A 1 5 Preparation of the base solution Prepare the base solution the same way as the sample solution was prepared using all reagents except for the sample A 1 6 Test operation If the composition of the sample is clearly known use the calibration curve method medium correction method Otherwise
39. ation of both the sample solution and internal standard substance A 2 2 j calibration curve solution are the same A 2 6 2 Creating calibration curve Use the spectrometer for quantitative analysis Spray some of the prepared calibration curve solution into the argon plasma or into air acetylene flame If measuring samples that contain hydrofluoric acid use a sample introduction system that can stand hydrofluoric acid a Atomic Absorption Spectrometry AAS Quantitate by measuring the optical density of lead elements Create a curve that shows the relationship between the optical density and the concentration of lead elements as a calibration curve when using the calibration curve method medium correction method For the standard addition method put the standard into the sample solution Determine the unknown concentration by extrapolating the addition curve with an optical density of zero lt A Linear Regression Line with less than 0 998 of linear coefficient R3 can be used for the initial calibration If the result of calibration standard i e standard substance standard solution etc measurement differs more than 20 from the expected value all relevant calibration standards and samples must be measured again gt b Inductively Coupled Plasma Optical Emission Spectrometry ICP OES Quantitate by measuring the intensity of lead elements When quantitate lead elements with calibration curve method create a
40. by add proper weight by the numberof S_si passengers Note _A solid cylinder which is 160 5 mm in diameter 300 5 mm in height and weighs 9kg The main part lies at the centre of the Added the model The radius of all surroundings is description for 5 1 mm This cylinder has two supports at the mass 150 2 5 mm position that are apart 180 model Omitted degree each other Note _A solid cylinder which is 200 5 mm in diameter 30045 mm in height and weighs 15kg The main part lies at the centre of the model The radius of all surroundings is 5 1 mm This cylinder has two supports at 150 2 5 mm position that are apart 180 degree each other The same as at present 5 3 8 1 Durability test for folding and locking devices Unfold the carriage in normal use position and lock all locking devices Then unlock them all and fold the carriage Repeat this process 100 times Examine whether the locking devices suit to 4 3 10 For carriages which have unfolding mattress or seat do this test only against the sash For type A carriages repeat this test 25 times in lying position and 75 times in sitting position 5 3 5 1 Durability test for folding and locking devices 36 Current Proposed Revision Remarks 5 3 8 2 Durability test for auxiliary locking 5 3 5 2 Durability test for auxiliary locking devices device
41. ce 550 25 C k Bunsen burner or Gas burner 1 Microwave digestion system Use a sample container and containers that are made of high pressure TFM tetrafluoro methaxil or PFA perfluoro alkoxyfluorocarbon or other fluorinated carbon substances Note The safety guidelines on handling the device vary depending on the microwave device used at each laboratory The analyst must refer to the instructions on proper and safe use of the microwave device and containers m Containers for Microwave digestion 100 mL etc Note TFM tetrafluoro methaxil PFA perfluoro alkoxyfluorocarbon PTFE polytetrafluoroethylene etc A 1 4 Sample preparation A 1 4 1 Test sample Weigh 1g of sample to every 0 1mg and put it in a beaker Use PTFE or PFA beaker if using hydrofluoric acid A 1 2 A 1 4 2 Preparation of test sample solution The pre processing of sample described in this section does not apply to all metals and their compounds Generally the solution is prepared using hydrochloric acid nitric acid or mixed acid For samples that are difficult to dissolve with those acids add perchloric acid and sulphuric acid wherever necessary However keep in mind that the use of sulphuric acid carries a risk of lead element loss and therefore seriously affects the quantitative test of lead The sample must be completely dissolved without residue by heating at high temperature Phosphoric acid also can be used to
42. created If the concentration of the sample is higher than the calibration curve dilute the sample solution to be within the range of the calibration curve and measure again 15 Check the precision at regular intervals with standard substances calibration curve solution etc once per every 10 samples Re create the calibration curve when necessary Note When the sample solution has been diluted within the range of calibration curve adjust the internal standard concentration in the diluted solution to concentration of the standard solution A 2 8 Calculation Calculate lead element content mg kg within the sample with the equation below C Aj A m V C The lead concentration in the sample mg kg A The lead concentration in the sample solution mg L A The lead concentration in the base test solution mg mL V Total volume of the sample solution mL m Amount of the sample g 16 lt New gt Safety Certificate Standards Baby Walking Frames Annex Lead in painted or coated materials 9 A3 A 3 1 The principle In this method separate the painted and coated surface according to 5 4 and then quantitate the total lead content A 3 2 Instruments and tools a Disposable plastic containers for digestion or glass test tubes 50 mL b Heating plates with holes to place test tubes in A 3 3 Reagents a Deionized water b
43. cs used for hammocks must be greater than 400 kPa 8 1 2 Colour fastness to daylight The colour fastness to daylight of fabric must be higher than Newly added recommendati Grade 4 8 1 3 Colour fastness to washing The colour fastness of fabric must be higher than Grade 4 8 1 4 Tire hardness The hardness of tire springs must be Hs 65 85 However foam tires are excluded 8 1 5 Corrosion resistance of metallic coatings There must not be any spot that is greater than 2mm in diameter per area of 50cm 8 1 6 Film of paint hardness There should not be any burst on the film of coating ons for items that are less relevant to the safety 4 Current Proposed Revision Remarks 8 2 Structure 8 2 1 Seat belt The seat belt must be wider than 25mm and easy to fasten When tightened to size model it must be able to press the abdomen of the model 8 2 2 Crotch Strap The crotch strap must wider than 50mm 8 3 Test methods 8 3 1 Bursting strength Check with Mullen Bursting Tester 8 3 2 Colour fastness to daylight Test according to the rules in KS K ISO 105 B02 Adopt exposure conditions that are preferred in Americas and use the method 5 for illumination Use radiant energy level of 1728 kJ m at 300 400nm or 43 kJ m at 420nm 8 3 3 Colour fastness Test with KS K ISO 105 Col 8 3 4 Tire hardness Check the hardness of wheel treads with KS M 6518 regulated spring type har
44. d for AAS within the concentration range from which the linearity of lead the analyte element is generated Prepare a base solution for a calibration curve and a standard solution for four calibration curves Note If the HBF has lower purity use HF instead b Inductively Coupled Plasma Mass Spectrometry ICP MS Prepare a base solution for a calibration curve and a standard solution for three calibration curves Extract 0 ug 5 ug of lead elements gradually and then put them into a 100 mL measuring flask Add the same amount of reagents as the reagents used for the sample solution preparation to the standard solution for calibration curves Put 1 ug of rhodium as the internal standard elements into the sample solution and into the standard solution for the calibration curve A 4 9 Calibration curve creation Creating a calibration curve varies based on the instrument to be used a Atomic Absorption Spectrometry AAS Inject some of the prepared standard solution for a calibration curve under optimal conditions into the air acetylene flame of the AAS to measure the atomic wavelength absorption of the lead element For the calibration curve method medium correction method create a curve as a calibration curve showing the relationship between the strength and concentration in the element spectral line The wavelength of lead element must be selected taking into account the typical 22
45. dissolve the sample Dissolving metals and their compounds with strong acids carries a risk of deposit Pb Ba from sulphuric acid and Ag Au Ag Oxide or hydroxide from hydrochloric acid will be formed The substances in the analyte might decrease due to co precipitation The analyte must be checked to see whether there is any loss in the substances Many elements and related compounds aluminum oxide silicon oxide chromium carbide and niobium carbide etc cannot be completely dissolved with this method If there are any of these substances completely dissolve the residue by alkali melting or by using airtight pressurized container after the decomposition of acids and then mix with the undiluted sample solution a General method to dissolve the sample Cover the glass beaker A 1 3 e 2 containing the sample with a watch glass Put 20 mL of mixed acid 1 A 1 2 n into it and heat until it dissolves Cool down to room temperature and then wash inside of the watch glass and the side of the beaker with water Remove the watch glass Move the solution into a 100 mL measuring flask A 1 3 e 3 and fill water up to the scale mark to dilute Dilute each sample solution with water to the appropriate concentration level of each measuring tool Put all sample solutions together to make the final solution Add 45 Current Proposed Revision Remarks
46. dness tester Shore A However foam tires are excluded 8 3 5 Corrosion resistance of metallic coatings Disassemble the most typical plated part e g frame and put it in 5 sodium chloride aqueous solution 20 5 C for 2 hours Take it out and check whether it is rusted or not 8 3 6 Film of paint hardness Grip a pencil HB as shown in the figure Press just hard enough not to break the pencil s core and push 3mm Test 5 spots clean black lead with eraser and examine the scratches 1 8mm 4 42 Current Proposed Revision Remarks lt New gt Safety Certificate Standards Baby Carriages Annex Lead in metal base materials 14 A1 A 1 1 The principle Provided in this Annex are methods to quantitate lead content in baby carriages that have metal as their base material Atomic Absorption Spectrometry AAS Inductively Coupled Plasma Optical Emission Spectrometry ICP OES Inductively Coupled Plasma Mass Spectrometry ICP MS and some of chemical sample preparation methods are provided Dissolve the sample using acids such as hydrochloric acid or nitric acid and then quantitate lead content with AAS ICP OES ICP MS etc Note Poisonous and dangerous substances are used in this method therefore the detailed precautions below must be followed A 1 2 Reagents The concentration of the analyte and disturbing e
47. e calibration curve Then calculate the lead element content mg kg with the equation below C A A m V C The lead concentration in the sample mg kg A The measured lead concentration in the sample solution mg L A The measured lead concentration in the base test solution mg L V Total volume of the sample solution mL m Amount of the sample g 10 lt New gt Safety Certificate Standards Baby Walking Frames Annex Lead in high molecular base materials 9 A2 A 2 1 The principle Defined in this annex are methods to quantitate lead contents in high molecular base materials used for baby walking frames Choose the most appropriate method for quantitative analysis among Atomic Absorption Spectrometry AAS Inductively Coupled Plasma Optical Emission Spectrometry ICP OES and Inductively Coupled Plasma Mass Spectrometry ICP MS Dry ashing acid decomposition using sulphuric acid or nitric acid and acid decomposition using a microwave digestion system can be used as method to decompose the sample A microwave digestion system is recommended when using sulphuric acid for decomposition to reduce the measurement error of analyte It is because the use of sulphuric acid has a risk of losing lead If the sample solution contains insoluble substances in it analyze the deposit separately with X ray fluorescence spectrometry or any other means and then mix it with undilu
48. ensely to generate carbon dioxide and nitrogen oxide This will cause the increase of pressure in the container A safety device of the micro oven can react and the container can be opened due to the sudden high pressure Also elements of the analyte can be lost and in the worst case it can explode Therefore when reagents are added to the sample leave it until the reaction stops and then set up the system Note The same amount and kind of acid must be used when testing the same sample 2 3 times A 4 6 Test process Use the calibration curve method to measure the sample The internal standard method sensitivity comparison method is used for ICP MS Note The standard addition method can be used to increase reliability of the test method Note If the medium effect is not correctable the medium needs to be removed by separation methods such as the solvent extraction method and ion exchange A 4 7 Preparation of solution for calibration curve Two methods are used for the preparation of calibration standard solution a Calibration curve method medium correction method Prepare a base solution for a calibration curve and a standard solution for three calibration curves Extract 0 ug 100 ug of lead elements gradually and put them into 100 mL measuring flask When preparing the standard solution with the medium correction method add the same amount of reagents and medium elements as the sample solut
49. ent then calculate the concentration mg kg of the lead element in the sample according to the equation below C A A m V C The lead concentration in the sample mg kg A The measured lead concentration from sample solution mg L A The measured lead concentration from base test solution mg mL 23 V Total volume of the sample solution mL m Amount of the sample g Note The above equation is generalized because the first dilution of test solution is applied due to the potential diversity of analysis methods in this section Keep in mind that all of the dilution must be included for the calculation lt New gt Safety Certificate Standards Baby Walking Frames Annex Phthalate Plasticizer 9 C C 1 The principle Measure phthalate plasticizer content in plastic using Gas Chromatograph Mass Spectrometry GC MS C 1 1 Reagents and instruments Only validated grades of analytical reagents must be used a n hexane Those stipulated in KS M 8221 3 b Filters for Soxhlet thimble filter 28mm 100mm of size Made of cellulose and the oil content must be less than 0 1 c Syringe filters Less than 0 45 um Filters exclusively for organic solvent that are made of Teflon d Vials Use vial stoppers for GC that are made of Teflon Note Wash all glassware including flask and stoppers with cleanser and rinse several time
50. eroxide A 4 2 k and 1 mL of water Carefully shake the container for about 10 seconds to get rid of the generating gas Once the reaction stops cover the container with a stopper Set up the microwave digestion system A 4 3 and operate the microwave oven according to the pre set decomposition program to dissolve the sample Note If the HBF has lower purity use HF instead 20 Cool to room temperature leave for approx 1 hour Open the container add 4 mL of hydrochloric acid solution A 4 2 b and put a stopper on it Set up the microwave digestion system A 4 3 1 again and operate the microwave oven according to the pre set decomposition program to dissolve the sample Cool to room temperature leave for approx 1 hour Open the container and filter with a glass microfiber strainer into 25 mL measuring flask Wash with 5 hydrochloric acid solution A 4 2 d and dilute to the scale mark If there are any residues check with an appropriate method to see if there are remaining lead elements in the residue The operation process described above is the minimum requirement for the microwave digestion system and need to test 2 3 times per sample Note It is recommended to not put more than 200 mg of powdered sample in a container The mixture of powdered test sample and nitric acid HBF hydrogen peroxide hydrochloric acid reacts quickly and int
51. erpendicular to the inclined plane Stopping axles test with its wheels backward bumper must be placed as shown in Figure 8 When the carriage is likely to slip down the testing stand skid proof support can be used arin ae Reflected EN standards lt a E lt Figure 8 gt 5 4 2 2 2 Stability of single seater box type hammocks Place a box type hammock loaded with a 9kg mass model as described in 5 4 2 2 1 The model must be horizontally at the centre of the hammock A light weighted wedge can be used to fix the model if necessary 5 4 2 2 3 Stability of single seater Type A Type B baby carriages Place a baby carriage loaded with a 15 kg mass model as described in 5 4 2 2 1 If the angle between the seat and the backrest is less than 150 make sure the model has full contact with the backrest If the angle between the seat and the backrest is greater than 150 place the mass model 39 Current Proposed Revision Remarks like Figure 9 Restrict the mass model s movement to less than 50 mm to all directions except upper direction with the seat belt The baby carriage must be tested in the most vulnerable condition at all test positions toward the inclined plane A light weighted wedge can be used to fix the model if necessary lt q 9 3 gt lt Figure 9 gt 5 4 2 2 4 Stability of baby carriages for several
52. es check if they contain lead elements with another analyzing method e g XRF or completely dissolve the residues with other decomposition methods use alkali melting or an airtight pressurized container Mix the solution that has been processed with this method to undiluted solution and proceed to the lead analysis A 4 5 Test sample a Dissolve with aqua regia Put approximately 2g of powdered sample maximum particle size 250 um into a reaction vessel and add 22 5 mL of hydrochloric acid A 4 2 b and 7 5 mL of nitric acid A 4 2 f Set up a reflux condenser and absorption cell containing 10 mL of 0 5 mol L nitric acid A 4 2 g on the reaction vessel Dissolve for 12 hours at room temperature and then for 2 hours at 120 C Cool to room temperature and put the contents of the absorption cell into the reaction vessel If there are insolubles filter the sample solution with a 0 45 um glass fibre strainer Wash the insolubles 4 times with 5 hydrochloric acid A 4 2 d Move the resulting solution into a 100 mL measuring flask A 4 2 h 2 and add 5 hydrochloric acid A 4 2 d to the scale mark to dilute Dilute the sample solution to fit the concentration of the calibration curve When using internal standard substances add them before diluting the solution Before filling up to the final volume of 100 mL add 1 000 uL of internal standard when using ICP OES and then add an internal standard diluted to 1 1
53. et decomposition program to dissolve the sample Cool the vessel and move the solution into a 50 mL measuring flask then fill water up to the scale mark to dilute Dilute the sample solution with water to meet the appropriate concentration standard of each measuring tool If the internal standard substances A 2 2 j are being used add internal standard solution A 2 2 before diluting the solution in a flask Add 500 uL when using ICP OES and dilute the solution to 1 1000 for ICP MS 2 For irresoluble samples or samples containing silicon dioxide or titanium do as follows Put the weighed sample in a microwave digestion vessel and add 5mL of nitric acid A 2 2 c 1 mL of hydrofluoric acid A 2 2 g and 0 1 mL 1 0 mL of hydrogen peroxide A 2 2 e Put a stopper on the vessel and operate microwave oven according to the pre set decomposition program to dissolve the sample Cool the vessel and move the solution into a 50 mL low density polyethylene LDPE or PFA measuring flask then fill water up to the scale mark to dilute Add boric acid A 2 2 h to form fluoride to protect quartz plasma torch if there is no anti acid sample injection system Dilute the sample solution with water to meet appropriate concentration level of each measuring tool If the internal standard substances A 2 2 j are being used add internal standard solution A 2 2 j before diluting the solution in a flask Add 500 uL when using ICP OES and dilute the
54. exceed 9 8 m s a drum which has a 10mm height rim on it When rotating the drum at a speed of 100 times per minute 100 rpm the acceleration of vibration perpendicularly from the centre of seat must be 30 less than the acceleration of vibration perpendicularly from the axle for Type A and 50 for Type B Improved test reproducibility 4 4 10 Impact durability When hitting a hammock with a weight model in it against the 4 4 10 Impact durability mass model Improved test steel stair it must not cause any abnormal reproducibility condition 5 2 1 Bursting Strength Check with Mullen lt Deleted gt Changed to Bursting Tester recommendat ion 5 2 2 Colour fastness to daylight Test according lt Deleted gt to the rules in KS K ISO 105 B02 Adopt Changed to exposure conditions that are preferred in recommendat Americas and use method 5 for illumination Use radiant energy level of 1728 kJ m at 300 400nm 10n or 43 kJ m at 420nm 5 2 3 Colour fastness Test according to the rules lt Deleted gt Changed to in KS K ISO 105 COl recommendat ion 5 2 4 Tire hardness Check the hardness of the lt Deleted gt whed tread with a KS M 6518 regulated spring Changed to type hardness tester Shore A However foam recomme
55. fire 3 Heat slowly until volatile matters that were generated while the sample has being carbonized to charcoal are completely discharged and only ashes are left 4 Put the crucible containing sample into an electric furnace of 550 25 C Leave the furnace door ajar to supply enough air for oxidization 5 Continue to heat until the carbon completely oxidizes and only ashes are left 6 Take the crucible out of the electric furnace and cool down to room temperature 7 Add 5 mL of nitric acid A 2 2 c and heat slowly to dissolve the residues Move this solution into a 50 mL measuring flask A 2 3 e 3 and add water up to the scale mark to dilute Dilute the sample solution to have an appropriate concentration for the measuring device When using internal standard substances A 2 2 j add internal standard solution A 2 2 j before diluting the solution in a flask Add 500 uL when using ICP OES and dilute the solution to 1 1000 for ICP MS If the sample contains a halogen element follow the steps below 1 Put the sample into a crucible A 2 3 g and weigh 2 Add 5mL 15 mL of sulphuric acid A 2 2 b put the crucible on a heating plate or sand bath A 2 3 1 and then slowly heat until the sample is being carbonized to black 3 When it cools down add 5 mL of nitric acid A 2 2 c and continue to heat until the sample has completely decomposed and white lead
56. for quantitative analysis among Atomic Absorption Spectrometry AAS Inductively Coupled Plasma Optical Emission Spectrometry ICP OES and Inductively Coupled Plasma Mass Spectrometry ICP MS Dry ashing acid decomposition using sulphuric acid or nitric acid and acid decomposition using microwave digestion system can be used as methods to decompose the sample a microwave digestion system is recommended when using sulphuric acid for decomposition to reduce the measurement error of analyte It is because the use of sulphuric acid carries the risk of losing lead If the sample solution contains insoluble substances analyze the deposit separately with X ray fluorescence spectrometry or any other means and then mix it with undiluted solution to quantitate lead Note Poisonous and dangerous substances are used in this method therefore the detailed precautions below must be followed A 2 2 Reagents The concentration of the analyte and disturbing elements in reagent and water etc must be negligibly low compared to the detection limit a Water Use the first class water that is stipulated in KS M ISO 3696 for all sample solution pre processing and dilution b Sulphuric acid p H SO 1 84 g mL 95 m m Trace Metal grade c Nitric acid p HNO 1 40 g mL 65 m m Trace Metal grade d Nitric acid 10 m m Trace Metal grade e Hydrogen peroxide p H202 1 10 g mL 30 m m
57. hen see a doctor If it requires a long term care foods containing lots of calcium will be good for healing A 1 3 Instruments and tools a Atomic Absorption Spectrophotometer AAS Consists of sample container nebulizer burner system with air acetylene burner head hollow cathode tube detector data processing and control system b Inductively coupled plasma Optical Emission Spectrometer ICP OES Consists of sample container plasma torch spray chamber nebulizer optical system detector control and data output system c Inductively coupled plasma Optical Mass Spectrometer ICP MS Consists of sample container plasma torch spray chamber nebulizer interface mass filter detector discharger control and data output system d Scale Must be able to measure precisely up to 0 1mg e Glassware Wash all glassware with 10 by volume nitric acid before using 1 Kjeldhal flasks 100 mL 2 Beakers 100 mL 200 mL etc 3 Measuring flasks 100 mL 200 mL 500 mL etc Other measuring tools can be used provided they are precise and accurate 4 Single channel pipettes 1mL 5 mL 10 mL 20 mL etc 5 Funnels 6 Watch glasses f Platinum crucibles 50 mL 150 mL etc g Porcelain crucibles 50 mL 150 mL etc 44 Current Proposed Revision Remarks h Micro pipettes 10uL 100 uL 200 uL etc i Heating plates or Sand bath j Electric furna
58. ing flask and dilute with water to have a concentration of Oug 100 ug In the case of using the medium correction method it is necessary to correct the medium of sample solution and the medium of standard solution to be as close as possible Add each reagent and medium element to prepare a mixed standard solution for the calibration curve that corresponds to the sample solution When using hydrofluoric acid use PTFE or PFA beaker and low density polyethylene LDPE or PFA measuring flask b Standard addition method Prepare the standard solution for the calibration curve by adding reagents and internal standard elements to get the same concentration as the sample solution When using hydrofluoric acid use PTFE or PFA beakers and LDPE or PFA measuring flasks 5 5 3 6 2 Standard solution for calibration curve a Atomic Absorption Spectrometry AAS Inject some of the prepared standard solution for the calibration curve into the air acetylene flame of the AAS under optimal conditions and measure the atomic wavelength absorption of the lead element For the calibration curve method medium correction method create a curve that shows the relationship between strength and concentration in the lead element spectral line as a calibration curve If there is interference due to co existing substances select an interference free wavelength within the range of selected calibration or the strength of
59. int or paint like coating Follow the Safety Certification Standards Annex 14 A3 5 2 1 3 Effluent of harmful elements Manipulate according to the rules in KS G ISO 8124 3 5 2 1 4 Phthalate plasticizer Follow Safety Certification Standards 14 B for Diethylhexylphthalate DEHP dibutylphthalate DBP and Butylbenzylphthalate BBP contents Added methods for lead and plasticizer test 5 2 8 Formaldehyde detection in Fabrics Measure the quantity of liberated formaldehyde according to the methods in KS K 0611 A 5 2 8 Formaldehyde detection in Fabrics The same as at present Changed the place 34 Current Proposed Revision Remarks 5 3 Structure 5 3 1 Shape Omitted 5 3 2 Inclination of the seat level Place the carriage on level and flat place and measure a a and b b of Figure 3 Measure the centre of sitting area The difference between a and a must be less than 10mm and b must be greater than b For box type hammocks the difference between b and b must be less than 10mm 5 3 Structure 5 3 1 Shape The same as at present 5 3 2 Inclination of the seat level lt Figure 3 gt 5 3 3 Droop Load a weight model in a hammock with correct posture check maximum droops for sitting area and back area like Figure 4 lt Figure 4 gt lt Figure 3 gt 5 3 4 Backrest 5 3 4 1 Reclining angle Pull the backrest back
60. ion to make it as the standard solution for the calibration curve If boron fluoride is used use a measuring flask that is made of low 21 density poly ethylene DPE or PFA b Internal standard method Add the same amount of reagents as those used for sample solution preparation to the standard solution for calibration curves Put the internal standard elements into both the sample solution and the standard solution for the calibration curve If boron fluoride is used use a measuring flask that is made of low density poly ethylene or PFA c Atomic Absorption Spectrometry and Inductively Coupled Plasma Optical Emission Spectrometry AAS IPS OES When measuring leads with the medium correction method a proper spectral line must be selected and the calibration must use the standard solution for the calibration curve that has the medium corrected d Inductively Coupled Plasma Mass Spectrometry ICP MS The appropriate internal standard method can be used for this A 4 8 Preparation of standard solution The preparation of a standard solution varies based on the instrument to be used a Inductively Coupled Plasma Optical Emission Spectrometry and Atomic Absorption Spectrometry IPS OES AAS The medium compositions between the sample solution by aqua regia decomposition and the solution by microwave digestion are different The standard solution prepared for ICP OES can be use
61. ith water Remove the watch glass Add 10 mL of sulphuric acid A 1 2 h and heat until white lead is being generated from the sulphuric acid Cool for a few minutes add 20 mL of hydrobromic acid A 1 2 1 and reheat until white lead is being generated Repeat this process 3 times and cool to room temperature Then add 10 mL of nitric acid A 1 2 b to liquefy soluble salts in it Cool to room temperature then move the solution into a 100 mL measuring flask A 1 3 e 3 and fill water up to the scale mark to dilute Dilute each sample solution with water to appropriate concentration level of each measuring tool Put all sample solutions together to make the final solution Add an internal standard element A 1 2 r containing rhodium and add water to the scale mark of the flask to dilute when necessary The type and amount of element are determined based on the selected method of analysis Each dilution process must be taken into account when calculating the result The dilutions made and additions of internal standard elements A 1 2 r must be recorded in the test report Another method is to dissolve 1g of the sample using water 40mL nitric acid A 1 2 b 12 mL and boron fluoride A 1 2 d 6mL or a solution that has 75g of boracic acid 5 5 3 2 m melted into 200 mL of hydrofluoric acid A 1 2 j 40 m m In this case use PTFE or PFA beakers or PFA measuring flask
62. lected calibration or other appropriate means c Inductively Coupled Plasma Mass Spectrometry ICP MS Spray sample solution into the argon plasma through the spray chamber When measuring a sample containing hydrofluoric acid use a sample that can resist hydrofluoric acid Read the value of the mass versus the number of electric charge of lead and then measure the internal standard elements Calculate the ratio of the measured value of the lead element to the measured value of the internal standard elements A 4 10 Measuring the sample Measure the calibration base solution and the sample solution after the calibration curve has been created If the concentration of the sample solution is higher than the calibration curve dilute the solution to fit within the range of the calibration curve and measure again Check the precision of measurement at regular intervals with standard substances calibration curve solution etc per every 10 samples Re create the calibration curve if necessary lt A Linear Regression Line with more than 0 998 of linear coefficient R can be used for the initial calibration If the check result of the ecalibration standard i e standard substance standard solution etc differs more than 20 from the expected value measure all relevant calibration standards and samples again gt A 4 11 Calculation Obtain the strength of spectrum for the lead elem
63. lements in reagent and water etc must be negligibly low compared to the detection limit a Water Use the first class water that is stipulated in KS M ISO 3696 for all sample solution preparations and dilution b Nitric acid p HNO3 1 4 g mL 65 m m Trace Metal grade c Weak nitric acid 1 2 dilute strong nitric acid A 1 2 b with water A 1 2 a to ratio of 1 2 by volume d Boron fluoride HBF 50 m m Trace Metal grade Or solution of boric acid A 1 2 m 75g dissolved in 200 mL of 40 m m hydrofluoric acid A 1 2 can be used e Hydrogen peroxide p H202 1 10 g mL 30 m m Trace Metal grade f Perchloric acid p HCIO 1 67 g mL 70 m m Trace Metal grade Phosphoric acid p H3 PO 1 69 g mL more than 85 m m Trace Metal grade h Sulphuric acid p H SO 1 84 g mL 95 m m Trace Metal grade i Weak Sulphuric acid 1 2 dilute strong sulphuric acid A 1 2 h with water A 1 2 a and ratio of 1 2 by volume j Hydrofluoric acid p HF 1 18 g mL 40 m m Trace Metal grade k Hydrochloric acid p HCD 1 16 g mL 37 m m Trace Metal grade 1 Hydrobromic acid p HBr 1 48 g mL 47 49 m m Trace Metal grade m Boric acid H BQ 1 48 mg mL 5 m m Trace Metal grade n Mixed acid 1 Hydrochloric acid A 1 2 k Nitric acid A 1 2 b Water A 1 2 a
64. mock recommendat must be higher than Grade 4 i ion 4 2 3 Colour fastness to washing The colour lt Deleted gt Changed to fastness for washing of fabric for the hammock recommendat must be higher than Grade 4 TE 28 Current Proposed Revision Remarks 4 2 4 Tire hardness The hardness of the tire lt Deleted gt Changed to springs must be between Hs 65 85 However recommendat foam tires are excluded ion 4 2 5 Any parts that are made of plastics or coated 4 2 1 Harmful elements with synthetic paint must meet the following 4 2 1 1 Effluent of the harmful elements The standards after harmful elements testing materials used for baby carriages must be suited to However parts that do not have contact with the the Table 2 below baby are excluded a Lead Pb less than 90 mg kg Table 2 Permitted effluent limits of certain b Antimony Sb less than 60 mg kg elements in baby carriage materials Unit mg kg c Arsenic As less than 25 mg kg m dd a A 4 ement tandar ement tandar d Barium Ba less than 1 000 mg kg ISE l e Cadmium Cd less than 75 mg kg ree ie As Simplified the f Chrome Cr less than 60 mg kg Barium Ba expression g Mercury Hg less than 60 mg kg Cadmium Cd Below 60 h Selenium Se less than 500 mg kg Below 25 Below 1 000 Below 75 Chromium Cr Lead Pb Mercury Hg Selenium Se Below 60 Below 90 Below 60 Below 500 4 2 6 Co
65. n with its buttock at intersection of the seat and 5 4 2 1 Equipments backrest Fasten seat belt to baby s comfort by 5 4 2 1 1 A flat floor which can be reclined allowing some room between the seat belt and the horizontally at an angle of 12 degrees and is model so that an adult s hand can go in and out wrapped with grade 80 sandpaper with fingers spread Place the carriage on a 15 5 4 2 1 2 A rectangular stopping bumper that has incline as shown in Figure 9 Place the wheels at the same height as the carriage wheel s axle the crossing of a flat plane and an inclined plane 5 4 2 2 Process Test for all four directions whether it overturns or 5 4 2 2 1 Position the carriages not Place carriages on the flat floor forward backward For carriages with a head protector make sure the and perpendicularly sideways to the 1 inclined weight model s back of the head is properly plane Put the stopping bumper at the wheels that placed inside of the protector For carriages with are on the lower part of the inclined plane Set up an adjustable backrest test when the backrest the carriages with rotating wheels at the most fully erected and fully reclined respectively For a vulnerable position two seater carriage sit weight models on each For three wheelers the line which the contact point seat and fasten seatbelts to test overturn of lower rear wheel is passing must be If the carriage has separated wheels casters and p
66. n a beaker Use PTFE or PFA beaker if using hydrofluoric acid A 1 2 j A 1 4 2 Preparation of test sample solution The pre processing of a sample described in this section does not apply to all metals and their compounds Generally the solution is prepared using hydrochloric acid nitric acid or mixed acid For samples that are difficult to dissolve with those acids add perchloric acid and sulphuric acid wherever necessary However keep in mind that the use of sulphuric acid carries a risk of lead element loss and therefore seriously affects the quantitative test of lead The sample must be completely dissolved without residue by heating at high temperature Phosphoric acid also can be used to dissolve the sample Dissolving metals and their compound with strong acids have a risk of deposit Pb Ba from sulphuric acid and Ag Au Ag Oxide or hydroxide from hydrochloric acid will be formed The substances in the analyte might decrease due to co precipitation The analyte must be checked to see whether there is any loss of the substances Many elements and related compounds aluminum oxide silicon oxide chromium carbide and niobium carbide etc cannot be completely dissolved with this method If there are any of these substances completely dissolve the residue by alkali melting or by using an airtight pressurized container after the decomposition of acids and then mix with the undiluted sample solution
67. ndat tires are excluded ion 5 2 5 Parts that are made of plastic or coated lt Deleted gt Changed to with synthetic paint recommendat Omitted ion 5 2 6 Corrosion resistance of metallic lt Deleted gt coatings Disassemble the most typical plated part Changed to e g frame and put it in 5 sodium chloride recommendat aqueous solution 20 5 C for 2 hours Take it ion out and check whether it is rusted or not 5 2 7 Film of paint hardness Grip a pencil HB lt Deleted gt as shown in Figure 2 Press just hard enough not Changed to to break the pencil s core and push 3mm Test 5 recommendat spots clean black lead with eraser and examine ion the scratches 32 Current Proposed Revision Remarks lt New gt 5 2 1 Harmful elements 5 2 1 1 Getting samples Baby carriages exist in various forms and there could be important differences according to the lead content level in each component Therefore each item in a baby carriage needs to be treated individually In other words if a product is composed of several substances break down each substance into different components and then test the sample for each individual component The sampling requires the separation of each component by their characters either by hand or cut out with tools while ensuring no damage is done to each component Therefore buckles hooks or other components can be separated one by one by hand or by cutting them off
68. nes c Carrier gas Helium gas with purity of 99 9 or more d Column temperature 100 C 270 C e Injector temperature 325 C f Detector temperature 280 C g Carrier gas flux 1 0 mL min h Sample injection amount 1 uL split less mode 2 Mass Spectrometer a Ionization part Electronionization ED b Analyzer part quadrupole c Detection range 50 m z 500 m z Note The condition of detector column etc can be changed according to the instrument and analysis C 1 7 Calculation The concentration of the sample and the calibration curve that has been recorded in the base test solution is used to obtain the amount of each plasticizer The content of each plasticizer mg kg can be calculated with an equation below C Ai A m V C The plasticizer concentration in the sample mg kg A The plasticizer concentration in the sample solution mg L A The plasticizer concentration in the base test solution mg L V Total volume of the sample solution mL m Weight of the sample g 63 4 Presenting written opinions Any individual business or group who has opinion s about this revision proposal are welcomed to present opinions in writing to Korean Agency for Technology and Standards Consumer Product Safety Division with the following information by May 20 2009 A Opinions about the proposal Whether you are for or against it and the reasoning B Per
69. ns Lab coats gloves and goggles must be worn when dealing with acids Note Nitric acid may generate toxic gas Always add acid into the sample inside an air exhauster hood Note Gases from plasma must come out through the air exhauster hood Note A special measure must be taken when using hydrofluoric acid For example if hydrofluoric acid has contacted the skin wash it thoroughly with water for more than 5 minutes and apply an antidote ointment water soluble gel with 2 5 calcium gluconate to the skin as_a first aid and then see a doctor If it requires long term care foods containing lots of calcium will be good for healing A 4 3 Instruments and tools a Atomic Absorption Spectrophotometer AAS Consists of sample container nebulizer burner system with air acetylene burner head hollow cathode tube detector data processing and control system b Inductively coupled plasma Optical Emission Spectrometer ICP OES Consists of sample container plasma torch spray chamber nebulizer optical system detector control and data output system c Inductively coupled plasma Optical Mass Spectrometer ICP MS Consists of sample container plasma torch spray chamber nebulizer interface mass filter detector discharger control and data output system d Sample injection system that can stand against hydrofluoric acid A hydrofluoric acid proof sample injection system that is consisted of a sample
70. nsists of sample container plasma torch spray chamber nebulizer interface mass filter detector discharger control system and data output system d Scale Must be able to measure precisely up to 0 1mg e Glassware Wash all glassware with 10 by volume nitric acid before using 1 Kjeldhal flasks 100 mL 2 Beakers 100 mL 200 mL etc 3 Measuring flasks 100 mL 200 mL 500 mL etc Other measuring tools can be used provided they are precise and accurate 4 Single channel pipettes 1mL 5 mL 10 mL 20 mL etc 5 Funnels 6 Watch glasses f Platinum crucibles 50 mL 150 mL etc g Porcelain crucibles 50 mL 150 mL etc h Micro pipettes 10uL 100 uL 200 uL etc i Heating plates or Sand bath 1 Electric furnace 550 25 C k Bunsen burner or Gas burner D Microwave digestion system Use a sample container and containers that are made of high pressure TFM tetrafluoro methaxil or PFA perfluoro alkoxyfluorocarbon or other fluorinated carbon substances Note The safety guidelines on handling the device vary depending on the microwave device used at each laboratory The analyst must refer to the instructions on proper and safe use of the microwave device and 12 containers m Containers for Microwave digestion 100 mL etc Note TFM tetrafluoro methaxil PFA perfluoro alkoxyfluorocarbon PTFE polytetrafluoroethylene etc
71. nts to recommendations and improved test methods to secure reproducibility of safety test 3 The Contents of Proposed Revision of Notification of Safety Standards of the Industrial Products subject to Safety Certification Of the safety standards of the industrial products subject to safety certification revise Annex 9 Baby Walking Frames and Annex 14 Baby Carriages as follows The Proposed Revision of Notification of Safety Standards of the Industrial Products subject to Safety Certification can be found in Notices Announcements section of the Korean Agency for Technology and Standards website www kats go kr and would not be published in the official gazette Industrial Products Safety Certification Old vs New Comparison Table to be published in the official gazette o Safety Certification Annex 9 Baby Walking Frames Omit the contents when Current Proposed Revision Remarks 2 Related standards Omitted KS A 3151 Random sampling method 2 Related standards The same as at present Added a lead pe OI veeciee a Pb and KS K 0611 A method to measure KS M 1991 Determination of phthalates content in plasticizer formaldehyde in textile products Water hete m tenal Effluent test plastic materials extraction method KS M 8221 N hexane reagent method to KS G ISO 8124 3 Safety of toys Part 3 related Effluent_of certain element standards KS M ISO 3696 Water for an
72. o and concentration for the internal standard element When measuring a sample containing hydrofluoric acid use sample containers that can resist hydrofluoric acid The wavelength of lead element is selected from the spectral line The wavelength of lead element must be selected by taking into account the typical measuring wavelength A thorough study of the detection limit and accuracy must be carried out If there is an interference due to coexisting substances the degree of the interference must be corrected by selecting an interference free wavelength within the range of selected calibration or other appropriate means c Inductively Coupled Plasma Mass Spectrometry ICP MS Spray the sample solution into the argon plasma through the spray chamber When measuring a sample containing hydrofluoric acid use a sample that can 60 resist hydrofluoric acid Read the value of the mass versus the number of electric charge of lead and then measure the internal standard elements Calculate the ratio of measured value of lead element to measured value of the internal standard elements A 4 10 Measuring the sample Measure the calibration base solution and the sample solution after the calibration curve has been created If the concentration of the sample solution is higher than the calibration curve dilute the solution to fit within the range of
73. od Note If the medium effect is not correctable the medium needs to be removed by separation methods such as solvent extraction method and ion exchange A 4 7 Preparation of solution for calibration curve Two methods are used for the preparation of calibration standard solution a Calibration curve method medium correction method Prepare a base solution for a calibration curve and a standard solution for three calibration curves Extract 0 ug 100 ug of lead elements gradually and then put them into 100 mL measuring flask When preparing the standard solution with the medium correction method add the same amount of reagents and medium elements as the sample solution to make it as the standard solution for calibration curve If boron fluoride were used use a measuring flask that is made of low density poly ethylene DPE or PFA b Internal standard method Add the same amount of reagents as those used for sample solution preparation to the standard solution for calibration curves Put the internal standard elements into both the sample solution and the standard solution for the calibration curve If boron fluoride is used use a measuring flask that is made of low density poly ethylene or PFA c Atomic Absorption Spectrometry and Inductively Coupled Plasma Optical Emission Spectrometry AAS IPS OES When measuring leads with the medium correction method a proper spectral line must be selected and the calibra
74. od medium correction method For the standard addition method put the standard into the sample solution Determine unknown concentration by extrapolating addition curve with an optical density of zero lt A Linear Regression Line with less than 0 998 of linear coefficient R3 can be used for the initial calibration If the result of calibration standard i e standard substance standard solution etc measurement differs more than 20 from the expected value all relevant calibration standards and samples must be measured again gt b Inductively Coupled Plasma Optical Emission Spectrometry ICP OES Quantitate by measuring the intensity of lead elements When quantitate lead elements with calibration curve method create a calibration curve that shows the relationship between intensity and concentration of lead elements For standard addition method create a calibration curve that shows the relationship between intensity ratio and concentration of lead elements as a calibration curve c Inductively Coupled Plasma Mass Spectrometry ICP MS Quantitate by measuring the charge number against the mass of lead elements For calibration curve method create a calibration curve that shows the relationship between the ratio of mass charge number and concentration of lead elements A 2 7 Measure of the sample Measure the base solution and sample solution after the calibration curve has been
75. of hydrogen peroxide A 2 2 e Put a stopper on the vessel and operate microwave oven according to the pre set decomposition program to dissolve the sample Cool the vessel and move the solution into a 50 mL low density polyethylene LDPE or PFA measuring flask then fill water up to the scale mark to dilute Add boric acid A 2 2 h to form fluoride to protect quartz plasma torch if there is no anti acid sample injection system Dilute the sample solution with water to meet the appropriate concentration level of each measuring tool If the internal standard substances A 2 2 j are being used add internal standard solution A 2 2 j before diluting the solution in a flask Add 500 uL when using ICP OES and dilute the solution to 1 1000 for ICP MS Note Add hydrogen peroxide only to know the reactants of the sample It must not be added when there are lots of easily oxidizable substances in the sample because they react quickly and intensely with easily oxidizable substances 3 If there are any residues in the sample solution separate them through centrifugation or filtration Use an appropriate method to check if there are lead elements in the residue A 2 5 Preparation of the base solution Prepare the base solution with the same way as the sample solution was prepared using all reagents except the sample A 2 6 Testing process 14
76. of sulphuric acid is being generated 4 Cool the heated crucible A 2 3 g Move it into an electric furnace A 2 3 that has temperature adjusted to 550 25 C and heat until all carbon has completely burned and all the water has boiled away 5 Take the crucible out of the furnace and cool to room temperature Add 5 mL of nitric acid A 2 2 c and heat slowly to dissolve the residues Move this solution into a 50 mL measuring flask and add water up to the scale mark to dilute Dilute the sample solution to have an appropriate concentration for the measuring device If the internal standard substances A 2 2 j are being used 51 add internal standard solution A 2 2 j before diluting the solution in a flask Add 500 uL when using ICP OES and dilute the solution to 1 1000 for ICP MS 6 If there are any residues separate them through centrifugation or filtration Use an appropriate method to check the existence of lead elements in the residue b Microwave decomposition 1 General decomposition method Put the weighed sample in a microwave digestion vessel and add 5mL of nitric acid A 2 2 c and 0 1 mL 1 0 mL of hydrogen peroxide A 2 2 e When the chemical reaction between the sample and acids has calmed down put a stopper on the vessel Assemble the microwave digestion system A 2 3 operate the microwave oven according to the pre s
77. of the system g Scale Must be able to measure precisely up to 0 1mg h Glassware Wash all glassware with 10 by volume nitric acid 10 3 h before using 1 Beakers 100 mL 200 mL 500 mL etc 2 Measuring flasks 100 mL 200 mL 500 mL etc Other kinds of volume measuring tools can be used provided that they are precise and accurate 3 Pipettes 1mL 5 mL 10 mL 20 mL etc 4 Cylinders 1mL 5 mL 10 mL etc 5 Watch glasses i Micro pipettes 200 uL 500 uL 1000 uL etc j Wash PTFE or PFA devices with 10 by volume nitric acid A 4 2 h before using 1 Beakers 100 mL 200 mL 500 mL etc 2 Measuring flasks 100 mL 200 mL etc k Heating plats or sand baths 1 Microwave digestion system 40 mL 100 mL etc A 4 4 Preparation of sample The pre processing of the samples described in this section does not apply to all parts which are not made of metals and high molecular materials Generally hydrochloric acid nitric acid or mixed acid are used For samples that are difficult to dissolve with those acids add perchloric acid sulphuric acid etc wherever necessary However keep in mind that use of sulphuric acid carries a risk of lead element loss and therefore seriously affects the quantitative test of 19 lead The sample must be completely dissolved without residue by heating at high temperature If there are any residu
78. or walking frames must not exceed 0 1 3 2 3 Corrosion resistance of metallic coatings 3 2 3 Changed from There must not be any spot that is greater than obligation to 2mm in diameter per area of 50cm Recommendation recommendat ion 4 2 Materials 4 2 Materials Clarified the 4 2 1 Testing harmful elements for tables 4 2 1 Harmful elements sampling lastic products and parts that were coated with 4 2 1 1 Samplin method synthetic resin paints 4 2 1 1 Sample preparation 4 2 1 1 1 Films of paints solid state decalcomanias grind dried materials and pass them Walking frames exist in various forms and there could be important differences according to the lead content level in each component Therefore each item in a walking frame needs to be treated through a sieve of 0 5mm mesh 4 2 1 1 2 Plastics papers textiles dyed goods etc individually In other words if a product is composed of several substances the substances cut the materials into 6 by 6 mm should be thinner must be broken down into its components and a than 6mm 4 2 1 1 3 Metals liquid materials sample as they sample of each one tested The sampling requires the separation of each are 4 2 1 2 Testing 4 2 1 2 1 Films of paints plastics textiles dyed component by their characters eithe
79. put the contents of the absorption cell into the reaction vessel If there are insolubles filter the sample solution with a 0 45 um glass fibre strainer Wash the insolubles 4 times with 5 hydrochloric acid A 4 2 d Move the resulting solution into a 100 mL measuring flask A 4 2 h 2 and add 5 hydrochloric acid A 4 2 d to the scale mark to dilute Dilute the sample solution to fit the concentration of the calibration curve When using internal standard substances add them before diluting the solution Before filling up to the final volume of 100 mL add 1 000 uL of internal standard when using ICP OES and then add internal standard diluted to 1 1000 for ICP MS If there are any residues separate them through centrifugation or filtration Check the residues with appropriate method e g XRF to see if there are 57 remaining leads When it is not possible to use a test instrument described in this section another simple method can be used if the tester trusts its compatibility Errors generated from the provided test operation must be verified and be recorded in the test report The following is the procedure for the simple method Cover the glass beaker containing the sample with a watch glass then put mixed acid A 4 2 i into the beaker and heat for 2 hours at 120 C Leave it at room temperature for 12 hours wash the bottom of the watch glas
80. r control and data output system d Scale Must be able to measure precisely up to 0 1mg e Glassware Wash all glassware with 10 by volume nitric acid before using 1 Kjeldhal flasks 100 mL 2 Beakers 100 mL 200 mL etc 3 Measuring flasks 100 mL 200 mL 500 mL etc Other measuring tools can be used provided they are precise and accurate 4 Single channel pipettes 1mL 5 mL 10 mL 20 mL etc 5 Funnels 6 Watch glasses f Platinum crucibles 50 mL 150 mL etc g Porcelain crucibles 50 mL 150 mL etc Current Proposed Revision Remarks h Micro pipettes 10uL 100 uL 200 uL etc i Heating plates or Sand bath j Electric furnace 550 25 C k Bunsen burner or Gas burner 1 Microwave digestion system Use a sample container and containers that are made of high pressure TFM tetrafluoro methaxil or PFA perfluoro alkoxyfluorocarbon or other fluorinated carbon substances Note The safety guidelines on handling the device vary depending on the microwave device used at each laboratory The analyst must refer to the instructions on proper and safe use of the microwave device and containers m Containers for Microwave digestion 100 mL etc Note _TFM tetrafluoro methaxil PFA perfluoro alkoxyfluorocarbon PTFE polytetrafluoroethylene etc A 1 4 Sample preparation A 1 4 1 Test sample Weigh 1g of sample to every 0 1mg and put it i
81. r Sand bath D Electric furnace 550 25 C k Bunsen burner or Gas burner 1 Microwave digestion system Use a sample container and containers that are made of high pressure TFM tetrafluoro methaxil or PFA perfluoro alkoxyfluorocarbon or other fluorinated carbon substances Note The safety guidelines on handling the device vary depending on the microwave device used at each laboratory The analyst must refer to the 50 instruction on proper and safe use of the microwave device and containers m Containers for Microwave digestion 100 mL etc Note TFM tetrafluoro methaxil PFA perfluoro alkoxyfluorocarbon PTFE polytetrafluoroethylene etc A 2 4 Sample preparation A 2 4 1 Test sample It is better to start with the largest available quantity of the sample depending on the selected decomposition method When sampling with acid decomposition take 400 mg of cut and grinded sample precisely to every 0 1mg When sampling with dry ashing or acid decomposition with airtight containers grind trim or cut the sample and take 200 mg precisely to every 0 1mg A 2 4 2 Preparation of test solution a Dry ashing If the sample does not contain a halogen element follow the method below 1 Put the weighed sample in a crucible and heat on a heating plate 2 Heat the crucible inside a well ventilated hood with burner Be careful that the sample does not catch
82. r by hand or cut out with tools while ensuring no damage is done to each component Therefore buckles hooks or goods metals decalcomanias modelling clays other components can be separated one by one by paint imitations and general paints etc 4 2 1 2 1 1 Take more than 100mg of sample and add 50 times the sample s weight of 0 07 mol l hand or by cutting them off to use as samples for individual testing If there are components in a walking frame that are hydrochloric acid 37 2 C and then agitate for a minute 4 2 1 2 1 2 Measure the pH If it is higher than 1 5 then adjust it to 1 5 by adding 2 mol of hydrochloric acid 4 2 1 2 1 3 Agitate for 1 hour while keeping the temperature to 37 2 C and then leave it stationary for 1 hour 4 2 1 2 1 4 When necessary separate solid powder with centrifuge and filtration and then quantitate the elements by means of Atomic Absorption Spectrometry etc 4 2 112 2 Papers and cardboards 4 2 1 2 2 1 Take more than 100mg of sample and add 25 times the sample s weight of distilled water 37 2 C to resolve solidity painted or coated separate the coated layers from the base material When doing so apply a few drops of a solvent such as ethylene chloride to separate the paint or coating easily therefore to contain as little base material as possible When a solvent is used it must be evapora
83. roxide p H202 1 10 g mL 30 m m Trace Metal grade l Standard lead solution 1 000 mg L m Internal standard solution Internal standard elements must not disturb the analyte Also the existence of internal standard elements in the sample solution must be negligibly low Sc In Tb Lu Re Rh Bi and Y can be used as internal standard elements for this particular spectrometry Note The toxicity of each reagent used in this method cannot be exactly determined However each chemical compound must be considered as a potential health threatening element Therefore it is recommended to reduce exposure to those chemicals as much as possible Note Pre processing with strong acids can cause corrosion and burns Lab coats gloves and goggles must be worn when dealing with acids Note Nitric acid may generate toxic gas Always add acid into the sample inside an air exhauster hood Note Gases from plasma must come out through the air exhauster hood Note A special measure must be taken when using hydrofluoric acid For example if hydrofluoric acid has contacted the skin wash it thoroughly with water for more than 5 minutes and apply an antidote ointment water soluble gel with 2 5 calcium gluconate to the skin as a first aid and then see a doctor If it requires long term care foods containing lots of calcium will be good for healing 18
84. rrosion resistance of metallic lt Deleted gt Changed to coatings There must not be any spot that is recommendat greater than 2mm in diameter per area of 50cm ion 4 2 7 Film of paint hardness There should not be lt Deleted gt Changed to any burst on coating recommendat ion lt New gt 4 2 1 2 Phthalate plasticizer The contents of Added the diethylhexylphthalate DEHP dibutylphthalate safety DBP and Butylbenzylphthalate BBP in plastic requirements materials which has been used for baby carriages must not exceed 0 1 for plasticizer 4 2 8 Formaldehyde detection in fabrics The content of the liberated formaldehyde must be less 4 2 2 Formaldehyde detection in fabrics than 75 mg kg in the products that have used The same as at present Changed the formalin resin finished fabrics However parts place that do not have contact with the baby are excluded 4 3 3 Seat belt A seat belt must be wider than 25 lt Deleted gt Changed to mm and easy to fasten When tied up to a size rec mmendat model it must be able to press the abdomen of the model 108 4 3 4 Crotch Strap A crotch strap must be wider lt Deleted gt Changed to than 50 mm 29 Current Proposed Revision Remarks recommendat ion 4 3 5 Foothold All baby carriages other than box type Hammock must be equipped with foothold 4 3 3 Foothold_ The same as at present Changed the place 4 3
85. s 3 Types Omitted Table 1 Types of baby carriages Type Description A Carriages that can be used by babies in lie flat position with full stretch B Carriages that can be used by babies in sitting position reclining on backrest However convertible carriages that allow shifting baby s positions between lying and sitting by adjusting back recline or footholds are classified as type A Box Type Hammock Carriages that have flat floor and surrounded by protection covers on all four sides These can be used by babies in lie flat or sitting position The height of protection covers must be over 15 cm 3 Types The same as at present Table 1 Types of baby carriages Description lt Deleted gt Deleted unnecessary descriptions 4 Safety Requirements 4 1 General 4 1 1 If there is a removable railing to prevent the baby slipping off from the seat a crotch strap must be attached Carriage without railing must have crotch strap and seat belt firmly attached to it 4 Safety Requirements 4 1 General However Box Type Hammock baby carriages can have seat belts only Added box hammock type baby carriages 4 2 1 Bursting strength The bursting strength of lt Deleted gt Changed to fabric for the hammock must be over 400 kPa recommendat ion 4 2 2 Colour fastness to daylight The colour lt Deleted gt Changed to fastness to daylight of fabric for the ham
86. s Changed the place Omitted The same as at present 5 3 9 Openings Omitted 5 3 6 Openings The same as at present Changed the place 5 3 10 Horizontal angle of the back Pull the backrest backward as possible and place a front wheel onto a prop of 200 mm height Measure h h and S in Figure 6 then produce B using an equation below tanB ho h S lt Figure 6 gt lt Figure 5 gt 37 Current Proposed Revision Remarks 5 3 11 Small parts Omitted 3 Parts that have fallen off in Paragraph 2 above should not completely fit into cylinder as shown in Figure 7 pats 0 bekei a 5741 45 0 25 146 lt Figure 7 gt 5 4 Performance 5 4 1 Travelling stability Place the carriage on a 10 incline as shown in Figure 8 under calm and windless condition If the carriage has a backrest fully straighten it Push unloaded carriage through the level and flat course Check if it runs 1m width and 3m length of provided lane without deviation If the carriage has separated wheels casters and axles test with its wheels backward SS a lt Figure 8 gt 5 3 8 Small parts The same as at present lt Figure 6 gt 5 4 Performance lt Figure 7 gt 38 Current Proposed Revision Remarks 5 4 2 Overturn Sit the weight model properly 5 4 2 Overtur
87. s and inner wall of the beaker with water and then remove the watch glass If there are insolubles filter the sample solution with a 0 45 um glass microfiber strainer Wash the insolubles with 5 m m hydrochloric acid solution A 4 2 d Move the resulting solution into a 100 mL measuring flask and add water to the scale mark to dilute The final solution will be used for the next measurement b Digestion with microwave Put approximately 200 mg of powdered sample maximum particle size 250 um into PTFE TFM PFA or other containers made of fluorocarbon A 4 3 j 2 Add 4 mL of nitric acid A 4 2 f 2 mL of boron fluoride A 4 2 j 1 mL of hydrogen peroxide A 4 2 k and 1 mL of water Carefully shake the container for about 10 seconds to get rid of the generating gas Once the reaction stops cover the container with a stopper Set up the microwave digestion system A 4 3 and operate the microwave oven according to the pre set decomposition program to dissolve the sample Note If the HBF4 has lower purity use HF instead Cool to room temperature leave for approx 1 hour Open the container add 4 mL of hydrochloric acid solution A 4 2 b and put a stopper on it Set up the microwave digestion system A 4 3 1 again and operate microwave oven according to the pre set decomposition program to dissolve the sample Cool to room temperature leave for approx 1 hour Open the cont
88. s with water before using Rinse more with acetone then with 10 mL of n hexane twice Dry at 105 C C 1 2 Preparation of the sample C 1 2 1 Sample homogenization Cut high molecular sample into 5 mm 5 mm with shearing machine or scissors Put these into a cryogenic crusher and grind to the particle size of smaller than 500 um For samples that cannot be used with a cryogenic crusher cut into 1 mm or smaller C 1 2 2 Sample extraction a Put 1 000 mg 10 mg of sample into a filter for Soxhlet Record the mass up to 0 1 mg b Cover the filter for Soxhlet with glass wool to prevent the sample floating Using n hexane as the solvent put 60 mL in a 100 mL round bottom flask Heat the solvent to reflux at the n hexane s boiling point 69 C Extract for at least 6 hours c Fill the extracted solution with the solvent Concentrate if necessary C 1 2 3 Alternative extraction method for soluble high molecular substances a Put a 1 000 mg of sample in a 300 mL beaker Measure the sample to every 0 1 mg b Add 50 mL of solvent n hexane into the beaker and then sonicate it for 60 24 minutes to decompose the sample c Deposit high molecular substances or filter the compound with 0 45 um PTFE screen C 1 4 Preparation of the standard solution Weigh 100 mg of each standard precisely to every 0 1 mg and put it in a 100mL measuring flask Dissolve with n hexane
89. sition with two separate movements It also needs to be structured as such to secure the safety with only one movement in normal use position 4 3 7 2 The same as at present Changed the places 4 3 11 Small parts Small parts that can be removed by the baby must not completely fit into the cylinder for small parts Refer Figure 7 Refer Figure 6 Changed the place 4 3 12 Parts that might cause entanglement or suffocation Straps in box type hammock and in the seat of carriage and any similar parts with textile materials must satisfy one of the following requirements a When pulled with a force of 25N the free length must not exceed 220 mm b When pulled with a force of less than 50N it must completely break at the centre of the length 4 3 9 Parts that might cause entanglement or suffocation The same as at present Changed the places 4 4 2 Overturn When inclining a hammock 15 to all four directions with a model loaded in it with the correct posture it should not overturn Reflected EN standards 31 Current Proposed Revision Remarks 4 4 8 Acceleration of vibrations Equip the frame with a shock absorbing device and load a weight 4 4 8 Acceleration of vibrations When tested according to 5 4 8 the acceleration of vibration at model Place front and rear wheels respectively on abdomen of the baby must not
90. solution to 1 1000 for ICP MS Note Add hydrogen peroxide only to know the reactants of the sample It must not be added when there are lots of easily oxidizable substances in the sample because they react quickly and intensely with easily oxidizable substances 3 If there are any residues in the sample solution separate them through centrifugation or filtration Use an appropriate method to check if there are lead elements in the residue A 2 5 Preparation of the base solution Prepare the base solution with the same way as the sample solution was prepared using all reagents except the sample A 2 6 Testing process 52 It is generally assumed that the sample consists of unknown compositions and the internal standard method sensitivity comparison method is recommended A standard addition method can be used if necessary If there is no disturbing element and compositions of the sample are known the calibration curve method medium correction method can be used as well Note The acid must be adjusted to the concentration of the sample in all circumstances A 2 6 1 Preparation of solution for the calibration curve Take Oug 100u of lead standard solution gradually and put it into a100 mL measuring flask A 2 3 e 3 When measuring with the internal standard addition method make sure the acid concentr
91. sonal information Address and phone number C If a group The name of group name of the representative address and phone number Contact Consumer Product Safety Division Korean Agency for Technology and Standards Ministry of Knowledge Economy o Address 96 Gyoyukwongil Gwacheon Si Gyonggi Do Republic of Korea 427 723 o Phone 02 509 7248 o Fax 02 509 7302 64
92. ted before testing If the amount of sample is not enough for testing take samples from multiple products of the same kind and cut the separated samples into proper size or grind them into minute size In the case of effluent test for walking frames be careful to not make any damage on the surface of the product Depending on the sample separation method multiple samples may be needed to keep the surface as it is during the effluent test The coatings of each individual part can be tainted while cutting Current Proposed Revision Remarks 4 2 1 2 2 2 Add to the solution 25 times the the samples out therefore yielding incorrect results sample s weight of 0 14 mol hydrochloric acid If damage is unavoidable test the part without 37 2 C and_ then agitate for a minute separation 4 2 1 2 2 3 Follow 4 2 1 2 1 2 4 2 1 2 1 4 for the 4 2 1 2 Lead content rest of the test 4 2 1 2 1 Leads in metal base material Added a test Follow the Safety Certification Standards Annex method for 4 2 1 2 3 After quantitating the elements in 9 Al lead 4 2 1 2 calculate the result of the harmful 4 2 1 2 2 Leads in high molecular base material plastica elements test based on the correction ratios in the Follow the Safety Certification Standards Annex i table below 9 A2 4 2 1 2 3 Leads in paint or paint like coating
93. ted calibration or the interference level must be corrected by appropriate means c Inductively Coupled Plasma Mass Spectrometry ICP MS Spray the sample solution into the argon plasma through the spray chamber When measuring samples containing hydrofluoric acid use sample containers and torches that can stand hydrofluoric acid Read the value of the mass versus electric charge of lead and measure the internal standard elements Calculate the ratio of the measured values to that of the measuring element for the internal standard elements A 1 7 Measuring the sample Once the calibration curve has been created measure the base solution for calibration and the sample solutions If the concentration of the sample solution is higher than the calibration curve dilute the sample solution to be within the range of the calibration curve and measure again Check the precision at regular intervals with standard substances calibration curve etc per every 10 samples Re create the calibration curve when necessary Note When the sample solution has been diluted within the range of the calibration curve adjust the internal standard concentration in the diluted solution to the concentration of the standard solution A 1 8 Calculation Obtain the strength of the spectral line of the lead element from the sample solution in A 1 7 and the amount of lead element from th
94. ted solution to quantitate lead Note Poisonous and dangerous substances are used in this method therefore the detailed precautions below must be followed A 2 2 Reagents The concentration of the analyte and disturbing elements in reagent and water etc must be negligibly low compared to the detection limit a Water Use the first class water that is stipulated in KS M ISO 3696 for all sample solution pre processing and dilution b Sulphuric acid p H SO 1 84 g mL 95 m m Trace Metal grade c Nitric acid p HNO3 1 40 g mL 65 m m Trace Metal grade d Nitric acid 10 m m Trace Metal grade e Hydrogen peroxide p H202 1 10 g mL 30 m m Trace Metal grade f Hydrochloric acid p HCD 1 19 g mL 37 m m Trace Metal grade g Hydrofluoric acid p HF 1 18 g mL 40 m m Trace Metal grade h Boric acid H3BQ3 5 m m 50 mg mL Trace Metal grade i Standard solution of lead 1 000 mg L j Internal standard substances Use internal standard substances that do not disturb the analyte and a small quantity of internal standard element Typically Sc In Tb Lu Re Rh Bi and Y are used as the internal standard elements Usually Sc and Y are recommended for ICP OES Concentration must be lower than 1 000 mg kg Note The toxicity of each reagent used in this method cannot be determined
95. thalate plasticizer content in plastic using Gas Chromatograph Mass Spectrometry GC MS C 1 1 Reagents and instruments Only validated grades of analytical reagents must be used a n hexane Those stipulated in KS M 8221 3 b Filters for Soxhlet thimble filter 28mm 100mm of size Made of cellulose and the oil content must be less than 0 1 c Syringe filters Less than 0 45 um Filters exclusively for organic solvent that are made of Teflon d Vials Use vial stoppers for GC that are made of Teflon Note Wash all glassware including flask and stoppers with cleanser and rinse several times with water before using Rinse more with acetone then with 10 mL of n hexane twice Dry at 105 C C 1 2 Preparation of the sample C 1 2 1Sample homogenization Cut high molecular sample into 5 mm 5 mm with shearing machine or scissors Put these into a cryogenic crusher and grind to the particle size of smaller than 500 um For samples that cannot be used with a cryogenic crusher cut into 1 mm or smaller C 1 2 2 Sample extraction a Put 1 000 mg 10 mg of sample into a filter for Soxhlet Record the mass up to 0 1 mg b Cover the filter for Soxhlet with glass wool to prevent the sample floating Using n hexane as the solvent put 60 mL in a 100 mL round bottom flask Heat the solvent to reflux at the n hexane s boiling point 69 C Extract for at least 6 hours c Fill the extracted solution
96. tion When using hydrofluoric acid use PTFE or PFA beakers and LDPE or PFA measuring flasks 5 5 3 6 2 Standard solution for calibration curve a Atomic Absorption Spectrometry AAS Inject some of the prepared standard solution for calibration curve into the air acetylene flame of the AAS under optimal conditions and measure the atomic wavelength absorption of the lead element For the calibration curve method medium correction method create a curve that shows the relationship between strength and concentration in the lead element spectral line as a calibration curve If there is interference due to co existing substances select an interference free wavelength within the range of selected calibration or the strength of the interference must be corrected by appropriate means lt A Linear Regression Line with less than 0 998 of linear coefficient R can be used for the initial calibration If the difference between expected value and the result of checked standard i e standard substance standard solution etc is greater than 20 all relevant calibration materials and samples must be measured again b Inductively Coupled Plasma Optical Emission Spectrometry ICP OES Inject some of the prepared standard solution for calibration curve into the argon plasma of the ICP OES under optimal conditions and measure the atomic wavelength absorption of the lead element For the calibration curve method medium
97. tion must use a standard solution for calibration curve that has the medium corrected d Inductively Coupled Plasma Mass Spectrometry ICP MS An appropriate internal standard method can be used for this A 4 8 Preparation of standard solution Preparation of a standard solution varies based on the instrument to be used a Inductively Coupled Plasma Optical Emission Spectrometry _and Atomic Absorption Spectrometry IPS OES AAS The medium compositions between the sample solution by aqua regia decomposition and the solution by microwave digestion are different The 59 standard solution prepared for ICP OES can be used for AAS within the concentration range from which the linearity of lead the analyte element is generated Prepare a base solution for a calibration curve and a standard solution for four calibration curves Note If the HBF4 has lower purity use HF instead b Inductively Coupled Plasma Mass Spectrometry ICP MS Prepare base solution for a calibration curve and standard solution for three calibration curves Extract 0 ug 5 ug of lead elements gradually and then put them into 100 mL measuring flask Add the same amount of reagents as the reagents used for sample solution preparation to the standard solution for calibration curves Put 1 ug of rhodium as the internal standard elements into the sample solution and into the standard solution for calibration curve
98. to use as samples for individual testing If there are components in a baby carriage that were painted or coated separate the coated layers from the base material When doing so apply a few drops of a solvent such as ethylene chloride to make the painted or coated parts emulsify and therefore to fall off easily When a solvent is used it must be evaporated before the testing If the amount of sample is not enough for testing take samples from multiple products of the same kind and cut the separated samples into proper size or grind them into minute size In the case of effluent test for baby carriages be careful to not make any damage to the surface of the test product Depending on the test sample separation method many samples may be needed to keep the surface perfectly undisturbed as it is during the effluent test The coatings of each individual part can be tainted while cutting the samples out therefore yielding an incorrect result If damage is unavoidable test the part without separation Clarified the sampling method 33 Current Proposed Revision Remarks 5 2 1 2 Lead content 5 2 1 2 1 Leads in metal base material Follow the Safety Certification Standards Annex 14 A1 5 2 1 2 2 Leads in high molecular base material Follow the Safety Certification Standards Annex 14 A2 5 2 1 2 3 Leads in pa
99. unt of each plasticizer The content of each plasticizer mg kg can be calculated with an equation below C A A2 m V C The plasticizer concentration in the sample mg kg A The plasticizer concentration in the sample solution mg L A gt The plasticizer concentration in the base test solution mg L V Total volume of the sample solution mL m Weight of the sample g 25 26 published in the official gazette o Safety Certification Annex 14 Baby Carriages Omit the contents when to be Current Proposed Revision Remarks 2 Related standards Omitted 2 Related standards The same as at present KS A 3151 Random sampling method KS K 0611 A method to measure Formali hyde formaldehyde in textile products Water sf a extraction method Added lead lt New gt KS M 1991 A method to detect phthalate plasticizer Pb and in synthetic resins plasticizer effluent test KS M 8221 N hexane reagent method to KS G ISO 8124 3 Stability in toys Part 3 maui standards KS K ISO 105 B02 Textile colour fastness test method Part B02 colour fastness against artificial lights Xenon arc method KS K ISO 105 CO1 Textile colour fastness test method Part C01 wash fastness test method 1 Effluent of specific element KS M ISO 3696 Water for analytical laboratory use Standard and test method 27 Current Proposed Revision Remark
100. uring device When using internal standard substances A 2 2 j add internal standard solution A 2 2 j before diluting the solution in a flask Add 500 uL when using ICP OES and dilute the solution to 1 1000 for ICP MS If the sample contains a halogen element follow the steps below 1 Put the sample into a crucible A 2 3 g and weigh 2 Add 5mL 15 mL of sulphuric acid A 2 2 b put the crucible on a heating plate or sand bath A 2 3 1 and then slowly heat until the sample is being carbonized to black 3 When it cools down add 5 mL of nitric acid A 2 2 c and continue to heat until the sample has completely decomposed and white lead of sulphuric acid is being generated 4 Cool the heated crucible A 2 3 g Move it into an electric furnace A 2 3 that has temperature adjusted to 550 25 C and heat until all carbon has completely burned and all the water has boiled away 5 Take the crucible out of the furnace and cool to room temperature Add 5 mL of nitric acid A 2 2 c and heat slowly to dissolve the residues Move this solution into a 50 mL measuring flask and add water up to the scale mark to dilute Dilute the sample solution to have an appropriate concentration for the measuring device If the internal standard substances A 2 2 j are being used add internal standard solution A 2 2 j before diluting the solution in a flask
101. use the internal standard method sensitivity comparison method The standard addition method can be used if necessary 46 Current Proposed Revision Remarks Note The internal standard method is not applicable for AAS Note A medium correction method is better for samples with high medium concentration Note If the effect of the medium is incorrect the medium must be removed by methods such as solvent extraction and ion exchange A 1 6 1 Preparation of the standard solution for calibration curve The following two methods can be used to prepare a standard solution for a calibration curve a Calibration curve method medium correction method Put standard lead solution into 100 mL measuring flask and dilute with water to obtain a concentration of Oug 100 ug In case of using the medium correction method it is necessary to correct the medium of sample solution and the medium of standard solution to be as close as possible Add each reagent and medium element to prepare a mixed standard solution for the calibration curve that corresponds to the sample solution When using hydrofluoric acid use PTFE or PFA beaker and low density polyethylene LDPE or PFA measuring flask b Standard addition method Prepare a standard solution for a calibration curve by adding reagents and internal standard elements to obtain the same concentration as the sample solu
102. ward as possible and check the angle a as shown in Figure 5 lt Figure 5 gt 5 3 4 2 Erected angle Erect the backrest in full and check the angle that is shown in Figure 5 5 3 4 3 Angle adjuster Omitted 5 3 4 Backrest 5 3 4 1 Reclining angle 5 3 4 3 Angle adjuster The same as at present 35 Current Proposed Revision Remarks 5 3 5 Seat belt Measure the width with a tool lt Deleted gt such as a ruler Load a size model and see if there Changed to are any problems with fastening the model s recommendat abdomen ion 5 3 6 Crotch Strap Measure the width with a lt Deleted gt Changed to tool such as a ruler recommendat ion 5 3 7 Foothold Check with naked eyes lt Deleted gt Changed to recommendat ion 5 3 8 Folding and locking devices 5 3 5 Folding and locking devices For box type hammocks load a weight model of a mass model of 9kg at the position where the baby is to lie down 9kg For all other types of carriages load a weight a mass model of model of 15kg at the position where the baby is to 15kg sit For carriages designed to load more than one ba
103. with the solvent Concentrate if necessary C 1 2 3 Alternative extraction method for soluble high molecular substances a Get a 1 000 mg of sample in a 300 mL beaker Measure the sample to every 0 1 mg b Add 50 mL of solvent n hexane into the beaker and then sonicate it for 60 minutes to decompose the sample c Deposit high molecular substances or filter the compound with 0 45 um PTFE screen C 1 4 Preparation of the standard solution Weigh 100 mg of each standard precisely to every 0 1 mg and put it in a 100mL measuring flask Dissolve with n hexane fill up the n hexane up to the scale mark and shake to mix well This will serve as a standard undiluted solution 62 Dilute the standard undiluted solution properly to prepare a diluted standard solution for each concentration C 1 5 Preparation of the base solution Prepare with the same way as to prepare the sample solution but do not put in the sample C 1 6 Measuring the samples Inject 1 uL of test solution into Gas Chromatography Mass Spectrometer Perform the same process for phthalic acid at the same condition Create a calibration curve at the peak area compare it to the peak area from the test solution and then quantitate the sample 1 Gas Chromatograph a Detector Mass analyzing detector b Column J amp W DB 1 inner diameter 0 25 thickness 0 1 m length 30 m or equivalent o
104. ydrochloric acid p HCI 1 16 g mL 37 m m Trace Metal grade c Weak hydrochloric acid 1 2 dilute strong hydrochloric acid A 4 2 b with water A 4 2 a to ratio of 1 2 Trace Metal grade d 5 m m hydrochloric acid solutions Trace Metal grade e 10 m m hydrochloric acid solutions Trace Metal grade f Nitric acid p HNO 1 4 g mL 65 m m Trace Metal grade g 0 5 mol L nitric acid solution Trace Metal grade h 10 nitric acid solutions Trace Metal grade i Mixed acid HCI A 4 2 b HNO A 4 2 f 3 1 50 m m boron fluorides HBF Trace Metal grade k Hydrogen peroxide p H202 1 10 g mL 30 m m Trace Metal grade D Standard lead solution 1 000 mg L m Internal standard solution Internal standard elements must not disturb the analyte Also the existence of 55 internal standard elements in the sample solution must be negligibly low Sc In Tb Lu Re Rh Bi and Y can be used as internal standard elements for this particular spectrometry Note The toxicity of each reagent used in this method cannot be exactly determined However each chemical compound must be considered as a potential health threatening element Therefore it is recommended to reduce exposure to those chemicals as much as possible Note Pre processing with strong acids can cause corrosion and bur

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