Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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Standard No. Title Price(USD) Delivery Status Add to Cart
HG 2022-1991 Determination of free chlorine and total chlorine in industrial circulating cooling water N, N-Diethyl-1, 4-Phenylenediamine titration $60.00 via email in 1~3 business day abolished
HG/T 2023-1991 Determination of free chlorine and total chlorine in industrial circulating cooling water N, N-Diethyl-1, 4-Phenylenediamine spectrophotometric method $180.00 via email in 1~3 business day abolished
HG/T 2156-1991 Determination of anionic surface active agent in industrial circulating cooling water Methylene blue spectrophotometric method $184.00 via email in 1~3 business day abolished
SL 495-2010 Determination of chlorinated herbicides in water by gas chromatography $120.00 via email in 1~3 business day valid
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