混合气体的制备　称量法 Preparation of gas mixtures—Gravimetric method  ICS  71.100.20 CCS  G 86   中华人民共和国国家标准 GB/T 44329—2024 2024-08-2 3发布 2025-03-0 1实施     国家市场监督管理总局 国家标准化管理委员会 发 布 目　　次 前言   ·····································································································   Ⅲ 1     范围   ··································································································   1 2     规范性引用文件   ······················································································   1 3     术语和定义   ···························································································   1 4     制备方法   ······························································································   2 5     制备流程   ······························································································   2 6     制备前的准备   ·························································································   4      6.1     制备的可行性分析   ···············································································   4      6.2     充装系统的准备   ·················································································   4      6.3     包装容器及其阀门的准备   ········································································   4      6.4     原料气的准备   ····················································································   4      6.5     尾气处理   ·························································································   4      6.6     充装量的计算   ····················································································   4      6.7     充装系统的初次验证   ·············································································   5 7     混合气体的充装   ······················································································   5      7.1     充装步骤   ·························································································   5      7.2     充装控制   ·························································································   5 8     组分制备含量的计算   ·················································································   6 9     制备的验证   ···························································································   6      9.1     验证方法   ·························································································   6      9.2     混合气体组分含量的测定   ········································································   6      9.3     制备相对偏差的计算   ·············································································   6      9.4     验证结论   ·························································································   6 10     合格证   ·······························································································   7 11     称量法制备混合气体的实例   ·········································································   7 附录A （资料性）    称量法制备混合气体的实例   ·······················································   8      A.1     制备目标   ························································································   8      A.2     制备前准备   ······················································································   8      A.3     混合气体的充装   ·················································································   9      A.4     组分制备含量的计算   ············································································   9      A.5     制备的验证   ······················································································   9      A.6     合格证   ···························································································   9 参考文献   ································································································   10 GB/T 44329—2024     Ⅰ