GB/T 4921-1985

Waste gasfrom manufacturing process--Determination of chemical oxygendemand and nitrogenoxide--Potassium dichromate oxidation and naphthylethylene diamine colorimetric method

NORMA vydaná dňa 18.1.1985

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The information about the standard:

Designation standards: GB/T 4921-1985
Publication date standards: 18.1.1985
Country: Chinese technical standard
Kategória: Technické normy GB