HG 2022-1991
Determination of free chlorine and total chlorine in industrial circulating cooling water N,N--diethyl--1,4--phenylenediamine titration method (English Version)

Standard No.

HG 2022-1991

Language

Chinese, Available in English version

Release Date

1991

Published By

化学工业部

Latest

HG 2022-1991

HG 2022-1991 history

• 1991 HG 2022-1991 Determination of free chlorine and total chlorine in industrial circulating cooling water N,N--diethyl--1,4--phenylenediamine titration method