JIS K 0400-33-20:1999
Water quality -- Determination of free chlorine and total chlorine -- Part 2: Colorimetric method using N,N-diethyl-1,4-phenylenediamine for routine control purposes

Standard No.

JIS K 0400-33-20:1999

Release Date

1999

Published By

Japanese Industrial Standards Committee (JISC)

Status

Withdraw

Replace By

JIS K 0102:2008

Latest

JIS K 0102:2016

Scope

This standard specifies methods for the determination of free and total chlorine in water that are readily available for field testing. This method is based on visual comparison of colors with regularly calibrated standard scales. Special procedures are required for seawater and water containing bromides and iodides. This method can be applied to total chlorine of 0.0004~0.07 mmol/l (0.03~5 mg/l) as chlorine. For high concentrations, the sample to be measured must be diluted. If speed of operation and compactness of the apparatus are not paramount requirements, spectrophotometry is described as an alternative procedure.

JIS K 0400-33-20:1999 history

• 2016 JIS K 0102:2016 Testing methods for industrial wastewater
• 2013 JIS K 0102:2013 Testing methods for industrial wastewater
• 2008 JIS K 0102:2008 Testing methods for industrial wastewater
• 1999 JIS K 0400-33-20:1999 Water quality -- Determination of free chlorine and total chlorine -- Part 2: Colorimetric method using N,N-diethyl-1,4-phenylenediamine for routine control purposes