ISO 16664:2017 PDF

Scope: This document describes factors that may influence the composition of pure gases and homogeneous gas mixtures used for calibration purposes. This document only applies to gases or gas mixtures that are within the “utilization period”. It provides the following guidelines for the handling and use of calibration gas mixtures: — 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 of a gas mixture, taking into account the gas composition uncertainty given on the certificate and the user’s measurement uncertainty.

ISO 16664:2017 Referenced Document

ISO 472:2013 Plastics - Vocabulary
ISO 6142-1:2015 Gas analysis - Preparation of calibration gas mixtures - Part 1: Gravimetric method for Class I mixtures
ISO 7504:2015 Gas analysis - Vocabulary
ISO GUIDE 35:2006 Reference materials - General and statistical principles for certification
ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
ISO/IEC GUIDE 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
ISO/IEC GUIDE 99:2007 International vocabulary of metrology - Basic and general concepts and associated terms (VIM)
VDI 3490 Blatt 3-1980 Measurement of gases; specifications for transfer of calibration gas mixtures

2017 ISO 16664:2017 Gas analysis - Handling of calibration gases and gas mixtures - Guidelines
2004 ISO 16664:2004 Gas analysis - Handling of calibration gases and gas mixtures - Guidelines