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ISO 11352:2025

Water quality - Estimation of measurement uncertainty based on validation and quality control data
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ISO 11352:2025

Water quality - Estimation of measurement uncertainty based on validation and quality control data

PUBLISH DATE 2025
ISO 11352:2025

This document specifies approaches for the estimation of measurement uncertainty of chemical and physicochemical methods in single laboratories based on validation data and quality control data obtained within the field of water analysis. However, this approach can also be used in many other areas of chemical analysis.

NOTE 1        The principles of the estimation of uncertainty specified in this document are consistent with the principles described in ISO/IEC Guide 98-3.

In this document, the quantification of measurement uncertainty relies on performance characteristics of a measurement procedure obtained from validation and the results of internal and external quality control.

NOTE 2        The approaches specified in this document are mainly based on Nordtest TR 537[3], but also QUAM[4], and Eurolab TR 1/2007[2].

NOTE 3        This document only addresses the evaluation of measurement uncertainty for results obtained from quantitative measurement procedures. The uncertainties associated with results obtained from qualitative procedures are not considered.

SDO ISO: International Organization for Standardization
Document Number ISO 11352
Publication Date Jan. 1, 2025
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO/TC 147/SC 2
Publish Date Document Id Type View
Jan. 1, 2025 ISO 11352:2025 Revision
July 1, 2012 ISO 11352:2012 Revision