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ISO 6143:2025

Gas analysis - Comparison methods for determining and checking the composition of calibration gas mixtures
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ISO 6143:2025

Gas analysis - Comparison methods for determining and checking the composition of calibration gas mixtures

PUBLISH DATE 2025
ISO 6143:2025

This document specifies methods for:

—    determining the composition of a calibration gas mixture by comparison with appropriate reference gas mixtures;

—    calculating the uncertainty of the composition of a calibration gas mixture in relation to the known uncertainty of the composition of the reference gas mixtures with which it was compared;

—    checking the composition attributed to a calibration gas mixture by comparison with appropriate reference gas mixtures;

—    consistency testing and outlier search in suites of calibration gas mixtures of closely related composition.

NOTE 1    In principle, the method described in this document is also applicable to the analysis of (largely) unknown samples instead of prospective calibration gas mixtures (i.e. gas mixtures which are intended for use as calibration gas mixtures). Such applications, however, need appropriate care and consideration of additional uncertainty components, for example, concerning the effect of matrix differences between the reference gases used for calibration and the analysed sample.

NOTE 2    Comparison methods based on one- and two-point calibration are described in ISO 12963.

SDO ISO: International Organization for Standardization
Document Number ISO 6143
Publication Date Jan. 1, 2025
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO/TC 158
Publish Date Document Id Type View
Jan. 1, 2025 ISO 6143:2025 Revision
May 1, 2001 ISO 6143:2001 Revision