Published
Gives procedures for drinking waters, surface waters, brines (saline waters), domestic waters and industrial waters. After a preliminary distillation the test sample are analysed according to specific application by direct colorimetric method and by chloroform extraction method.
WITHDRAWN
ISO 6439:1984
PUBLISHED
ISO 6439:1990
90.93
Standard confirmed
Apr 4, 2023
Water quality — Determination of phenol index — 4-Aminoantipyrine spectrometric methods after distillation
90.93 Standard confirmed