This part of ISO 6145 specifies a method for continuous production of calibration gas mixtures, containing two or more components, from pure gases or other gas mixtures by continuous injection of the calibration component(s) into a complementary gas stream by means of a syringe.If pre-mixed gases are used instead of pure gases (see Annex A), much lower volume fractions can be obtained. The volume flow rates, from which the volume fractions are determined, can be calculated from the individual flow rates and can be independently measured by a suitable method given in ISO 6145-1.The merits of the method are that a substantial quantity of the gas mixture can b
DS/EN ISO 6145-4-2008由丹麦标准化协会 DK-DS 发布于 2008-11-05,并于 2008-11-05 实施。
DS/EN ISO 6145-4-2008在国际标准分类中归属于: 71.040.40 化学分析。
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