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GB/T 4921-1985  China national standard english version:

　
GB
中华人民共和国国家标准
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
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
Issued Date:1985-01-18 　 Implemented Date:1985-08-01
Issued by: 　 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
Chinese Version Price $5.00  per 1 page
English Translation Fee $15.00~$30.00   per 1 page
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