ISO 7393-2:1985
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.

ISO 7393-2:1985

Release Date

1985

Published By

International Organization for Standardization (ISO)

Status

Be replaced

Replace By

ISO 7393-2:2017

Latest

ISO 7393-2:2017

Scope

Specifies a procedure for water, readily applicable to field testing; it is based on measurement of the colour intensity by visual comparison of the colour with a scale of standards which is regularly calibrated. Sea water and waters containing bromides and iodides comprise a group for which special procedures are required. The procedure is applicable to concentrations, in terms of chlorine, from 0,000 4 to 0,07 mmol/l total chlorine and at higher concentrations by dilution of samples. Interferences of the procedure are noted.

ISO 7393-2:1985 history

• 2017 ISO 7393-2:2017 Water quality - Determination of free chlorine and total chlorine- Part 2:Colorimetric method using N,N-dialkyl-1,4-phenylenediamine, for routine control purposes
• 1985 ISO 7393-2:1985 Water quality; Determination of free chlorine and total chlorine; Part 2 : Colorimetric method using N,N-diethyl-1,4-phenylenediamine, for routine control purposes