DIN EN ISO 6142:2006 PDF

Scope: This International Standard specifies a gravimetric method for the preparation of calibration gas mixtures in cylinders of which the target accuracy of the composition has been pre-defined. It is applicable only to mixtures of gaseous or totally vaporized components which do not react with each other or with the cylinder walls. A procedure is given for a method of preparation based on requirements for the final gas mixture composition to be within preset levels of uncertainty. Multi-component gas mixtures (including natural gas) and multiple dilution mixtures are included in this International Standard and are considered to be special cases of the single component gravimetric preparation method. This International Standard also describes the procedure for verifying the composition of gravimetrically prepared calibration gases. Provided rigorous and comprehensive quality assurance and quality control procedures are adopted during the preparation and validation of these gravimetric gas mixtures, calibration gases of the highest accuracy can be obtained for a wide range of gas mixtures, in comparison with other methods of preparing such gases.

DIN EN ISO 6142:2006 Referenced Document

ISO 6141 Gas analysis — Contents of certificates for calibration gas mixtures — Amendment 1: Cross reference list to ISO Guide 31:2015 and ISO/IEC 17025:2017*， 2020-02-03 Update
ISO 6143 Gas analysis - Comparison methods for determining and checking the composition of calibration gas mixtures
ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories [Standard in French]*， 2017-11-01 Update

2015 DIN EN ISO 6142-1:2015 Gas analysis - Preparation of calibration gas mixtures - Part 1: Gravimetric method for Class I mixtures (ISO 6142-1:2015); German version EN ISO 6142-1:2015
2006 DIN EN ISO 6142:2006 Gas analysis - Preparation of calibration gas mixtures - Gravimetric method (ISO 6142:2001); English version of DIN EN ISO 6142:2006-11
0000 DIN EN ISO 6142:2005
0000 DIN ISO 6142:1985