ISO 6439:1990, Water quality - Determination of phenol index - 4-Aminoantipyrine spectrometric methods after distillation

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. This title may contain less than 24 pages of technical content.