GB/T 4921-1985 Waste gasfrom manufacturing process–Determination of chemical oxygendemand and nitrogenoxide–Potassium dichromate oxidation and naphthylethylene diamine colorimetric method

Standard Number: GB/T 4921-1985
Chinese:工业废气 耗氧值和氧化氮的测定 重铬酸钾氧化、萘乙二胺比色法
English:Waste gasfrom manufacturing process–Determination of chemical oxygendemand and nitrogenoxide–Potassium dichromate oxidation and naphthylethylene diamine colorimetric method

Effective Date:1985-08-01
Regulatory Authority:Ministry of Ecology and Environment
Issuing Regulatory Authority:State Environmental Protection Bureau

Adheres to international standards:N
PDF Downloadable:Y

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