DIN EN ISO 7393-3:2000
水质.游离氯和氯总含量测定.第3部分:测定氯总含量的碘量滴定法
Water quality - Determination of free chlorine and total chlorine - Part 3: Iodometric titration method for the determination of total chlorine (ISO 7393-3:1990); German version EN ISO 7393-3:2000