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ISO 16664:2004
M00007477
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ISO 16664:2004 Gas analysis - Handling of calibration gases and gas mixtures - Guidelines
standard by International Organization for Standardization, 07/15/2004
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ISO 16664:2004 describes factors that may influence the composition of pure gases and homogeneous gas mixtures used for calibration purposes. ISO 16664:2004 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.ISO 16664:2004 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.