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Normas DIN – AENOR
DIN EN ISO 7393-2:2017-04

DIN EN ISO 7393-2:2017-04

Water quality - Determination of free chlorine and total chlorine - Part 2: Colorimetric method using N,N-diethyl-1,4-phenylenediamine, for routine control purposes (ISO/DIS 7393-2:2017); German and English version prEN ISO 7393-2:2017 / Note: Date of issue 2017-03-03

Qualité de l'eau - Dosage du chlore libre et du chlore total - Partie 2: Méthode colorimétrique à la N,N-diéthylphénylène-1,4 diamine destinée aux contrôles de routine (ISO/DIS 7393-2:2017); Version allemande et anglaise prEN ISO 7393-2:2017 / Attention: Date de parution 2017-03-03

Wasserbeschaffenheit - Bestimmung von freiem Chlor und Gesamtchlor - Teil 2: Kolorimetrisches Verfahren mit N,N-Diethyl-1,4-Phenylendiamin für Routinekontrollen (ISO/DIS 7393-2:2017); Deutsche und Englische Fassung prEN ISO 7393-2:2017 / Achtung: Erscheinungsdatum 2017-03-03

Fecha Anulación:
2019-03 /Withdrawn
Equivalencias internacionales:

ISO/DIS 7393-2 (2017-01)

prEN ISO 7393-2 (2017-02)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 7393-2:2019-03

This document specifies a method for the determination of free chlorine and total chlorine in water, readily applicable to lab and field testing; it is based on measurement of the absorption the red DPD colour complex in a photometer or the colour intensity by visual comparison of the colour with a scale of standards that is regularly calibrated. Seawater and waters containing bromides and iodides comprise a group for which special procedures are required. This method is in practice applicable to concentrations, in terms of chlorine, from e. g. 0,000 4 mmol/l to 0,07 mmol/l (e. g. 0,03 mg/l to 5 mg/l) total chlorine. For higher concentrations, the test portion must be diluted.
Checks, Chemical analysis and testing, Chemical reactions, Chlorine, Colorimetry, Concentration, Definitions, Determination of content, Interferences, Mathematical calculations, Quality, Routine tests, Water, Water quality, Water testing
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