DIN EN ISO 7393-2E : 2019现行
Water quality – Determination of free chlorine and total chlorine – Part 2: Colorimetric method using N,N-dialkyl-1,4-phenylenediamine, for routine control purposes
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
This document specifies a method for the determination of free chlorine and total chlorine in water, readily applicable to lab- and field-testing.
ISO 7393-2 : 2017 - Identical
EN ISO 7393-2 : 2018 - Identical
EN ISO 7393-2 : 2018 - Identical
ISO 7393-2 : 2017 - Identical
