GB/T 11891-1989 English PDF

US$179.00 · In stock
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GB/T 11891-1989: Water quality. Determination of kjeldahl nitrogen

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 11891-1989	179	Add to Cart	2 days	Water quality. Determination of kjeldahl nitrogen

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Basic data

Standard ID: GB/T 11891-1989 (GB/T11891-1989)
Description (Translated English): Water quality. Determination of kjeldahl nitrogen
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Z16
Classification of International Standard: 13.060.40
Word Count Estimation: 5,556
Date of Issue: 11/3/1989
Date of Implementation: 7/1/1990
Adopted Standard: ISO 5663-1984, NEQ
Issuing agency(ies): State Bureau of Technical Supervision
Summary: This standard applies to the determination of industrial waste water, lakes, reservoirs, and other contaminated water Kjeldahl nitrogen. Kjeldahl nitrogen content is low, get more samples, after digestion and distillation, and finally to spectrophotometric determination of ammonia. At higher levels, get a small sample, and finally to the acid titration ammonia.

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