GB/T 4921-1985 standards english version

NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 4921-1985

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

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The Standardization Administration of the People's Republic of China

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GB Standard Code	GB/T 4921-1985
Standard Category	China National Standards
GB Standard English Title	Waste gasfrom manufacturing process--Determination of chemical oxygendemand and nitrogenoxide--Potassium dichromate oxidation and naphthylethylene diamine colorimetric method
GB Standard Chinese Title	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
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