超清版 GB/T 44329-2024 混合气体的制备 称量法

ICS 71.100.20
CCS G 86
中华人民共和国国家标准
GB/T 44329—2024
混合气体的制备　称量法
Preparation of gas mixtures—Gravimetric method

2024-08-23 发布2025-03-01 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 ································································