ISO 6142-1:2015
Gas analysis - Preparation of calibration gas mixtures - Part 1: Gravimetric method for Class I mixtures

Standard No.

ISO 6142-1:2015

Release Date

2015

Published By

International Organization for Standardization (ISO)

Status

Be replaced

Replace By

ISO 6142-1:2015/Amd 1:2020

Latest

ISO 6142-1:2015/Amd 1:2020

Scope

This part of ISO 6142 specifies a gravimetric method for the preparation of calibration gas mixtures in cylinders with traceable values for the amount-of-substance fraction (amount fraction) of one or more components. This part of ISO 6142 describes a method for calculating the uncertainty associated with the amount fraction of each component. This uncertainty calculation requires the evaluation of the contributions to the uncertainty due to factors including the weighing process, the purity of the components, the stability of the mixture, and the verification of the final mixture. This part of ISO 6142 is only applicable to mixtures of gaseous or totally vaporized components, which may be introduced into the cylinder in the gaseous or liquid state. Both binary and multi-component gas mixtures (including natural-gas type mixtures) are covered by this part of ISO 6142. Methods for the batch production of more than one mixture in a single process are not included in this part of ISO 6142. This part of ISO 6142 requires estimation of the stability of the mixture for its intended life time (maximum storage life), but it is not for use with components that react with each other unintentionally. This part of ISO 6142 also requires the impurities in each parent gas or liquid used in the preparation of the mixture to be assessed and quantified.

ISO 6142-1:2015 Referenced Document

• DIN 51896-1:1991 Gas analysis; quantities of compositions, compressibility factor; basis
• ISO 6141:2015 Gas analysis - Contents of certificates for calibration gas mixtures
• ISO 6143:2001 Gas analysis - Comparison methods for determining and checking the composition of calibration gas mixtures
• ISO 6145-10:2002 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 10: Permeation method
• ISO 6145-11:2005 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 11: Electrochemical generation
• ISO 6145-1:2003 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 1: Methods of calibration
• ISO 6145-2:2014 Gas analysis - Preparation of calibration gas mixtures using dynamic methods - Part 2: Piston pumps
• ISO 6145-4:2004 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 4: Continuous syringe injection method
• ISO 6145-5:2009 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 5: Capillary calibration devices
• ISO 6145-6:2003 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 6: Critical orifices
• ISO 6145-7:2009 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 7: Thermal mass-flow controllers
• ISO 6145-8:2005 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 8: Diffusion method
• ISO 6145-9:2009 Gas analysis - Preparation of calibration gas mixtures using dynamic volumetric methods - Part 9: Saturation method
• ISO 75 Plastics and ebonite — Determination of temperature of deflection under load
• ISO Guide 34:2009 General requirements for the competence of reference material producers
• ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

ISO 6142-1:2015 history

• 2020 ISO 6142-1:2015/Amd 1:2020 Gas analysis - Preparation of calibration gas mixtures - Part 1: Gravimetric method for Class I mixtures - Amendment 1: Corrections to formulae in Annex E and Annex G
• 2015 ISO 6142-1:2015 Gas analysis - Preparation of calibration gas mixtures - Part 1: Gravimetric method for Class I mixtures