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ISO/TS 21231:2019

Water quality -- Characterization of analytical methods -- Guidelines for the selection of a representative matrix

General information

Valid from 05.02.2019
ICS Groups
13.060.50 Examination of water for chemical substances
Directives or regulations
None

Standard history

Status
Date
Type
Name
05.02.2019
Main
ISO/TS 21231:2019
This document specifies representative materials suitable for the determination of the performance characteristics, including uncertainty, during the initial assessment of a quantitative method, used in a laboratory, for physico-chemical water analysis.
This document focuses on five main types of water:
-  waters intended for consumption (5.2);
-  natural waters (5.3);
-  waste waters (5.4);
-  marine waters (5.5);
-  recreational waters (5.6).
NOTE       Other more specific or less common types of water can be incorporated in any of the above types provided appropriate justifications. The characteristics of the standard matrix are compatible with the characteristics of the samples handled.

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Standard monitoring
English (PDF 1 MB)

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Standards designation

EVS Estonian standard
EN European standard (published by an CEN or CENELEC)
EN ISO International standard adopted as an European standard
ISO International Organization for Standardization’s standard
IEC International Electrotechnical Commission’s standard
HD CENELEC’s harmonisation document
   
EVS-EN European standard implemented in Estonia
EVS-EN ISO International standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IEC International standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IEC International electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
   
A, AMD amedment
+A a full standard plus the amendment
/A only amendment
COR, AC corrigendum
+COR a full standard plus the corrigendum
NA national annex
+NA a full standard plus the national annex
/NA only national annex
TS technical specification
TR technical report
CWA agreement, developed by a CEN or CENELEC
prEVS-EN (etc) draft standard
   
et the standard is in Estonian only
en the standard is in English only
et-en the standard is in Parallel text Estonian-English