1. 2. 95 97 1 0 5 0 40 1 10 35C 5 3. 17 5 2 3 2 2 1 led 2 3 4. 2 0 ppm UV PMT 3 UV 6 5. 80 A 10 5 B C x100 A B B 1 2 3 2 6 1 NO NO 6. 4 5 UV PMT PMT 6 NO z NO NO NO 7 7. 100 4 Winer 1974 4NEH 50 4NO 6H 0 400C 400 8. 300C 2N0 C 2N0 CO JIS 400 25C 80 9. 4 0 2 2 1 3 10. 2 7 3 2 2 1 1 7 1 7 1 1 11. NO H O O 2 y 959 O O INO NO 3 PMT en n 4ppb nm O IO NINE ee 4 O OHO j25 50 75 2 4 2 3 1 12. 1 H O oO Th 4 gt H2 744 or 2 Oo 7 H 2 oO 11 2 RW 0 O gydIcs O 0 4 No a NO 2 1O 9 O 2 2 2 112 3 16 4 NO 13. 4 25 50 75 4 JIS B7953 95 80 14. 3 90 4 ppb 4 1 0 3