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ISO/AWI 5663

Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium

General information

20.00     Mar 14, 2025

ISO

ISO/TC 147/SC 2

International Standard

Scope

Specifies a procedure for the determination of trivalent negative nitrogen. Organic nitrogen in the form of azide, azine, azo, hydrazone, nitrite, nitro, nitroso, oxime or semicarbazone is not determined quantitatively. The procedure is applicable to the analysis of raw, potable and waste waters.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 5663:1984

NOW

PROJECT
ISO/AWI 5663
20.00 New project registered in TC/SC work programme
Mar 14, 2025

National adoptions

Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium

10.99   New project approved

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