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Norm
ISO 7393-2:1985
Issue date: 1985 10 24
Water quality — Determination of free chlorine and total chlorine — Part 2: Colorimetric method using N,N-diethyl-1,4-phenylenediamine, for routine control purposes
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 o...
Withdrawn: 2017 12 13
Publisher:
International Organization for Standardization
Format:
Digital | 8 Pages
Language:
English
Currently valid:
ICS
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 7393-2:2017
2017 12 13
Water quality — Determination of free chlorine and total chlorine — Part 2: Colorimetric method usin...
Norm
ISO 7393-2:1985
1985 10 24
Water quality — Determination of free chlorine and total chlorine — Part 2: Colorimetric method usin...
Norm
↖
Norm
Issue date :
2017 12 13
Water quality — Determination of free chlorine and total chlorine — Part 2: Colorimetric method using N,N-dialkyl-1,4-phenylenediamine, for routine control purposes
