M00019888
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ISO DIS 16664 2016 Edition, May 26, 2016 GAS ANALYSIS - HANDLING OF CALIBRATION GASES AND GAS MIXTURES - GUIDELINES
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Availability date: 07/14/2021
Description / Abstract:
This International Standard describes factors that may influence the composition of pure gases and homogeneous gas mixtures used for calibration purposes. This International Standard only applies to gases or gas mixtures that are within the “utilization period”, and it pays special attention to
— storage of calibration gas cylinders;
— calibration gas withdrawal from cylinders;
— transfer of calibration gas from cylinders to the point of calibration.
It also outlines a method of assessing the stability for a gas mixture, and takes into account the gas composition uncertainty given on the certificate and the users measurement uncertainty.