BS EN ISO 6145-8:2008 - Gas analysis. Preparation of calibration gas mixtures using dynamic volumetric methods. Diffusion method – BSI British Standards

BS EN ISO 6145-8:2008

Gas analysis. Preparation of calibration gas mixtures using dynamic volumetric methods. Diffusion method

Status : Confirmed, Current   Published : September 2005

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BS EN ISO 6145-8:2008 Gas analysis. Preparation of calibration gas mixtures using dynamic volumetric methods. Diffusion method

BS EN ISO 6145-8 specifies a dynamic method for the preparation of calibration gas
mixtures using diffusion. It covers calibration gas mixtures containing component mole fractions ranging from 10−9 to 10−3.

The method specified in BS EN ISO 6145-8 also provides a relative expanded uncertainty of measurement.

The method can be applied for the generation of low-concentration calibration gases of organic components that are liquid at room temperature, with boiling points ranging from about 40 °C to 160 °C.

BS EN ISO 6145-8 applies to the generation of calibration gas mixtures of a wide range of hydrocarbons at ambient and indoor air concentration levels. It also applies to the generation of low-concentration gas mixtures of water.

Contents of BS EN ISO 6145-8

Introduction
Scope
Normative references
Principle
Reagents and materials
Apparatus
Procedure
Preliminary checks and operating conditions
Determination of mass loss
Expression of results
Calculation
Sources of uncertainty
Practical example of a diffusion cell calibrator configured for evaluating speed of response in a hygrometer
Example of performances of diffusion cells for toluene and trichloromethane
Example of uncertainty calculations for a periodic weighing system
Bibliography

 




Standard NumberBS EN ISO 6145-8:2008
TitleGas analysis. Preparation of calibration gas mixtures using dynamic volumetric methods. Diffusion method
StatusConfirmed, Current
Publication Date05 September 2005
Confirm Date27 September 2019
Normative References(Required to achieve compliance to this standard)ISO 6145-7
Informative References(Provided for Information)ISO 6145-6:2017, ISO 6143, ISO 6145-1
International RelationshipsEN ISO 6145-8:2008,ISO 6145-8:2005
Amended ByCorrigendum, February 2009
DescriptorsControl samples, Gases, Volumetric analysis, Calibration, Gas analysis, Mixtures, Diffusion
ICS71.040.40
Title in FrenchAnalyse des gaz. Préparation des mélanges de gaz pour étalonnage à l'aide de méthodes volumétriques dynamiques. Méthode par diffusion
Title in GermanGasanalyse. Herstellung von Kalibriergasgemischen mit Hilfe von dynamisch-volumetrischen Verfahren. Diffusionsverfahren
CommitteePTI/15
ISBN978 0 580 60361 7
PublisherBSI
FormatA4
DeliveryYes
Pages28
File Size627 KB
Price£182.00


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