IS 3025 : Part 81 : 2024/ISO 10304-4 : 2022 Methods of Sampling and Test (Physical and Chemical) for Water and Wastewater - Part 81 Determination of Chlorate, Chloride and Chlorite in Water with Low Contamination
NATIONAL FOREWORD
This Indian Standard (Part 81) which is identical to ISO 10304-4 : 2022 'Water quality — Determination of dissolved anions by liquid chromatography of ions - Part 4: Determination of chlorate, chloride, and chlorite in water with low contamination' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of Water Quality Sectional Committee and approval of the Chemical Division Council.
The Indian Standard IS 3025 : 1964 'Methods of sampling and test (physical and chemical) for water used in industry' prescribes the methods of test for various parameters in water and wastewater. The Committee responsible for formulating this standard has decided to harmonize the methods of test prescribed in IS 3025 with those prescribed in ISO standards. Accordingly, the committee decided to retain IS 3025 and publish the harmonized/ adopted test methods published by ISO in various parts of IS 3025 as this standard is widely recognized by water testing laboratories. The committee had further decided to publish the new test methods adopted/harmonized standards as a new standard and as a subsequent part/section of IS 3025.
This standard specifies a method for the determination of the dissolved anions chlorate, chloride and chlorite in water with low contamination (e.g. drinking water, raw water or swimming pool water). The diversity of the appropriate and suitable assemblies and the procedural steps depending on them permit a general description only.
The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words 'This document' appears referring to this standard, they should be read as 'This Indian Standard'; and
b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.