• EN ISO 16664:2017

    Current The latest, up-to-date edition.

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

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    Published date:  14-06-2017

    Publisher:  Comite Europeen de Normalisation

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Transport and storage
    5 Mode of withdrawal
    6 Transfer system
    7 Stability
    Annex A (informative) - Check on the stability of calibration
            gas mixtures by end-users
    Bibliography

    Abstract - (Show below) - (Hide below)

    ISO 16664:2017 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.

    General Product Information - (Show below) - (Hide below)

    Committee CEN/TC 238
    Document Type Standard
    Publisher Comite Europeen de Normalisation
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS EN 61207-1:2010 Expression of performance of gas analyzers General
    EN 61207-1:2010 Expression of performance of gas analyzers - Part 1: General

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
    CGA HB : 2013 HANDBOOK OF COMPRESSED GASES
    ISO Guide 35:2017 Reference materials Guidance for characterization and assessment of homogeneity and stability
    ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
    ISO 472:2013 Plastics Vocabulary
    ISO 7504:2015 Gas analysis Vocabulary
    ISO 6142-1:2015 Gas analysis Preparation of calibration gas mixtures Part 1: Gravimetric method for Class I mixtures
    VDI 3490 Blatt 3:1980-12 Measurement of gases; specifications for transfer of calibration gas mixtures
    ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
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