EN ISO 16664:2008

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

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.

Gasanalyse - Handhabung von Kalibriergasen und Gasgemischen - Richtlinien (ISO 16664:2004)

Diese Internationale Norm beschreibt Faktoren, die die Zusammensetzung von reinen Gasen und homogenen
Gasgemischen, die für Kalibrierzwecke verwendet werden, beeinflussen können. Diese Internationale Norm
betrifft ausschließlich Gase und Gasgemische innerhalb ihres „Verwendungszeitraums“ unter besonderer
Berücksichtigung
⎯ der Lagerung von Kalibriergasflaschen,
⎯ der Entnahme von Kalibriergas aus Flaschen,
⎯ dem Transfer von Kalibriergas aus Flaschen zur Kalibrierstelle.
Des Weiteren enthält die Norm eine Kurzbeschreibung eines Verfahrens zur Beurteilung der Stabilität eines
Gasgemischs, und sie berücksichtigt die im Zertifikat angegebene Unsicherheit der Zusammensetzung des
Gases und die Messunsicherheit des Anwenders.

Analyse des gaz - Manutention des gaz et des mélanges de gaz pour étalonnage - Lignes directrices (ISO 16664:2004)

L'ISO 16664:2004 décrit les facteurs susceptibles d'influencer la composition des gaz purs et des mélanges de gaz homogènes utilisés à des fins d'étalonnage. L'ISO 16664:2004 ne s'applique qu'aux gaz ou mélanges de gaz considérés dans les limites de la «période d'utilisation» et elle concerne plus particulièrement:
le stockage des bouteilles de gaz d'étalonnage;
le soutirage du gaz d'étalonnage des bouteilles;
le transfert du gaz d'étalonnage des bouteilles vers le point d'étalonnage.
Elle présente également une méthode permettant d'évaluer la stabilité d'un mélange de gaz et tient compte de l'incertitude de la composition du gaz mentionnée sur le certificat et de l'incertitude de mesure liée à l'utilisateur.

Analiza plinov - Ravnanje s kalibracijskimi plini in plinskimi zmesmi - Smernice (ISO 16664:2004)

General Information

• Status: Withdrawn
• Publication Date: 19-Aug-2008
• Withdrawal Date: 13-Jun-2017
• ICS: 71.040.40 - Chemical analysis
• Technical Committee: CEN/SS N21 - Gaseous fuels and combustible gas
• Drafting Committee: CEN/SS N21 - Gaseous fuels and combustible gas
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 14-Jun-2017
• Ref Project: SIST EN ISO 16664:2008 - Gas analysis - Handling of calibration gases and gas mixtures - Guidelines (ISO 16664:2004)

Relations

• Replaced By: EN ISO 16664:2017 - Gas analysis - Handling of calibration gases and gas mixtures - Guidelines (ISO 16664:2017)
• Effective Date: 21-Jun-2017

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2008
Analiza plinov - Ravnanje s kalibracijskimi plini in plinskimi zmesmi - Smernice
(ISO 16664:2004)
Gas analysis - Handling of calibration gases and gas mixtures - Guidelines (ISO
16664:2004)
Gasanalyse - Handhabung von Kalibriergasen und Gasgemischen - Richtlinien (ISO
16664:2004)
Analyse des gaz - Manutention des gaz et des mélanges de gaz pour étalonnage -
Lignes directrices (ISO 16664:2004)
Ta slovenski standard je istoveten z: EN ISO 16664:2008
ICS:
71.040.40 Kemijska analiza Chemical analysis
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 16664
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2008
ICS 71.040.40
English Version
Gas analysis - Handling of calibration gases and gas mixtures -
Guidelines (ISO 16664:2004)
Analyse des gaz - Manutention des gaz et des mélanges Gasanalyse - Handhabung von Kalibriergasen und
de gaz pour étalonnage - Lignes directrices (ISO Gasgemischen - Richtlinien (ISO 16664:2004)
16664:2004)
This European Standard was approved by CEN on 30 July 2008.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16664:2008: E
worldwide for CEN national Members.

Contents Page
Foreword.3

Foreword
The text of ISO 16664:2004 has been prepared by Technical Committee ISO/TC 158 “Analysis of gases” of
the International Organization for Standardization (ISO) and has been taken over as EN ISO 16664:2008 by
Technical Committee CEN/SS N21 “Gaseous fuels and combustible gas” the secretariat of which is held by
CMC.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by February 2009, and conflicting national standards shall be withdrawn
at the latest by February 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 16664:2004 has been approved by CEN as a EN ISO 16664:2008 without any modification.

INTERNATIONAL ISO
STANDARD 16664
First edition
2004-07-15
Gas analysis — Handling of calibration
gases and gas mixtures — Guidelines
Analyse des gaz — Manutention des gaz et des mélanges de gaz pour
étalonnage — Lignes directrices

Reference number
ISO 16664:2004(E)
©
ISO 2004
ISO 16664:2004(E)
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ii © ISO 2004 – All rights reserved

ISO 16664:2004(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope. 1
2 Terms and definitions. 1
3 Transport and storage . 4
3.1 General remarks. 4
3.2 Low temperature. 4
3.3 High temperature. 4
3.4 Water. 4
3.5 Storage and handling. 4
4 Mode of withdrawal. 5
4.1 General. 5
4.2 Minimum utilization pressure . 5
4.3 Temperature. 5
4.4 Pressure reduction and flow. 5
4.5 Replacement, change of cylinder positions. 5
5 Transfer system. 6
5.1 Purging procedure. 6
5.2 Considerations when designing and constructing gas transfer lines . 7
6 Stability. 13
Annex A (informative) Check on the stability of calibration gas mixtures by end-users . 14
Bibliography . 17

ISO 16664:2004(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16664 was prepared by Technical Committee ISO/TC 158, Analysis of gases.
iv © ISO 2004 – All rights reserved

ISO 16664:2004(E)
Introduction
This International Standard uses the terms “calibration gas” for both gas mixtures and pure gases as the
limiting case of gas mixtures.
The quality of calibration gases in cylinders as certified by producers is defined by
a) the correct analyte content;
b) a known uncertainty which is appropriate for its intended use;
c) the stability;
d) the homogeneity.
During its utilization period, the quality of calibration gases is influenced by
 storage conditions at the manufacturer’s and user’s sites;
 transport conditions;
 modes of calibration gas withdrawal and transfer;
 the transfer system employed.
INTERNATIONAL STANDARD ISO 16664:2004(E)

Gas analysis — Handling of calibration gases and gas
mixtures — Guidelines
SAFETY PRECAUTIONS — National and International safety regulations concerning storage, use and
transportation of pure gases and gas mixtures are to be followed in addition to this International
Standard.
1 Scope
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.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
calibration gas
pure gas or gas mixture used for calibration
2.2
calibration gas mixture
gas mixture of sufficient stability and homogeneity whose composition is properly established for use in the
calibration of a measuring instrument or for the validation of a measurement or gas analytical method
[ISO 7504:2001]
2.3
component
chemical substance present in, or a material used in the preparation of, a gas mixture
NOTE 1 In practice, the term component is used variously to mean either:
a) a distinct pure chemical substance; or
b) a material such as:
 a pure substance mixed with small amounts of inadvertent impurities,
ISO 16664:2004(E)
 a well defined mixture, such as air,
 a less well defined mixture, such as natural gas.
NOTE 2 In circumstances where it is required to distinguish unambiguously between the individual distinct chemical
substances present in a gas mixture and the materials used in gas mixture preparation, then the chemical substances
shall be referred to as “constituents”. When a constituent is or has been the subject of quantitative analysis, it may be
referred to as an “analyte”.
NOTE 3 In the preparation of gas mixtures, materials such as gases, vapours and gas mixtures, including their
impurities, are sometimes called “parent gases”.
[ISO 7504:2001]
2.4
homogeneity
state of a gas mixture wherein all of its components are distributed uniformly throug
...