EN ISO 7393-3:2000

Foreword
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling and samples
8 Procedures
9 Expression of results
10 Interferences
11 Test report
Annex A (normative) Preparation of chlorine-demand free water
Annex B (informative) Direct iodometric titration procedure
                      for the determination of total chlorine
                      in waters with low organic substances
                      content
Annex C (informative) Bibliography
Annex ZA (normative) Normative references to international
                     publications with their relevant
                     European publications

Specifies a procedure for water. It is applicable for the measurement of concentrations, in terms of chlorine, from 0,01 to 0,21 mmol/l. The interfering substances are given. In annex B a procedure for direct titration is specified. It is usually applied to chlorine concentrations above 7 mol/l in treated drinking water.