NF EN ISO 6142 : 2006

Superseded

GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES - GRAVIMETRIC METHOD

Superseded date

11-01-2015

Published date

01-12-2013

Publisher

Association Francaise de Normalisation

Foreword
1 Scope
2 Normative references
3 Principle
4 Preparation of the mixture
5 Calculation of uncertainty
6 Verification of calibration gas mixture composition
7 Test report
Annex A (informative) Practical examples
Annex B (informative) Guidelines for estimating filling
        pressures so as to avoid condensation of
        condensable components in gas mixtures
Annex C (informative) Precautions to be taken when
        weighing, handling and filling cylinders
Annex D (informative) Derivation of the equation for
        calculating the calibration gas mixture
        composition
Annex E (informative) Sources of error
Annex F (informative) Estimation of corrections and
        correction uncertainty
Annex G (informative) Computer implementation of
        recommended methods
Bibliography

Describes a gravimetric method for the preparation of calibration gas mixtures in cylinders of which the target accuracy has been pre-defined. Applicable only to mixtures of gaseous or totally vaporized components which do not react with each other or with the cylinder walls.

DevelopmentNote	Indice de classement: X20-542 PR NF EN ISO 6142 October 2005. (10/2005) Supersedes NFX 20 202. (02/2007)
DocumentType	Standard
PublisherName	Association Francaise de Normalisation
Status	Superseded
Supersedes	NFX 20 202 : 79 FD

Standards	Relationship
EN ISO 6142:2006	Identical
DIN EN ISO 6142:2006-11	Identical
I.S. EN ISO 6142:2007	Identical
BS EN ISO 6142:2006	Identical
ISO 6142:2001	Identical
UNE-EN ISO 6142:2007	Identical

NF EN ISO 6145-1 : 2008	GAS ANALYSIS - PREPARATION OF CALIBRATION GAS MIXTURES USING DYNAMIC VOLUMETRIC METHODS - PART 1: METHODS OF CALIBRATION
NF EN 15483 : 2009	AMBIENT AIR QUALITY - ATMOSPHERIC MEASUREMENTS NEAR GROUND WITH FTIR SPECTROSCOPY