20.00 Mar 14, 2025
ISO
ISO/TC 147/SC 2
International Standard
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.
PUBLISHED
ISO 5663:1984
PROJECT
ISO/AWI 5663
20.00
New project registered in TC/SC work programme
Mar 14, 2025
Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium
10.99 New project approved