ONORM EN ISO 7393-2 : 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 (ISO 7393-2:2017)
出版：Osterreichisches Normungsinstitut/Austrian Standards
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
ISO 7393-2 : 2017 - Identical
EN ISO 7393-2 : 2018 - Identical
