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prEN ISO 5663 rev

Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium prEN ISO 5663 rev

General information

10.99   New project approved   Mar 15, 2025

CEN

CEN/TC 230 Water analysis

European Norm

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
EN 25663:1993

NOW

IN_DEVELOPMENT
prEN ISO 5663 rev
10.99 New project approved
Mar 15, 2025




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