Published
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
90.92
Standard to be revised
Mar 14, 2025
PROJECT
ISO/AWI 5663
Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium
95.99 Withdrawal of Standard