ICS 13.060.50                         CHD 36

Revised Standard from Last Update.

1 SCOPE

This Indian Standard (Part 26) prescribes the following methods for determination of residual chlorine in water and wastewater:

a) Iodometric method;

b) Titrimetric method using DPD; and

c) Colorimetric method using DPD, for routine control purposes.

2 REFERENCES

The following standards contain provisions which through reference in this text constitute provisions of this standard. At the time of publications, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below:

695 : 1986 Acetic acid

1070 : 1992 Reagent grade water

2263 : 1979 Methods of preparation of indicator solutions

3025 (Part 1) : 1987 Methods of sampling and test (physical and chemical) for water and wastewater: Part 1 Sampling

ISO 8466-1 : 1990 Water quality - Calibration and evaluation of analytical methods and estimation of performance characteristics - Part 1: Statistical evaluation of the linear calibration function

IS 5182 (Part 2) : 2001 Methods for measurement of air pollution: Part 2 Sulphur dioxide, Section 1 Tetrachloromercurate/pararosaniline method (second revision)