HG/T 2022-1991
Determination of free chlorine and total chlorine in industrial circulating cooling water N,N-Diethyl-1,4-Phenylenediamine titration (English Version)

Standard No.

HG/T 2022-1991

Language

Chinese, Available in English version

Release Date

1991

Published By

Professional Standard - Chemical Industry

Status

Withdraw 2010-02

Latest

HG/T 2022-1991

Scope

This standard specifies the measurement method and range of free chlorine and total chlorine in circulating cooling water. This standard is applicable to the determination of total chlorine in circulating cooling water with a content of 0.1 to 2.5 mg/L (calculated as C1).

HG/T 2022-1991 history

• 1991 HG/T 2022-1991 Determination of free chlorine and total chlorine in industrial circulating cooling water N,N-Diethyl-1,4-Phenylenediamine titration