DIN EN ISO 7393-1-2000 水质.游离氯和氯总含量测定.第1部分:使用N,N-二乙基-1,4-苯二胺的滴定法
Water quality - Determination of free chlorine and total chlorine - Part 1: Titrimetric method using N,N-diethyl-1,4-phenylenediamine (ISO 7393-1:1985); German version EN ISO 7393-1:2000
The document specifies a titrimetric method for the determination of free chlorine and total chlorine in water, especially in drinking water or water in swimming pools, in the concentration range 0,0004 mmol/l to 0,07 mmol/l.