标准解读
GB/T 44329-2024 是一项关于混合气体制备的国家标准，具体聚焦于采用称量法进行混合气体的配制过程。该标准旨在为气体混合物的准确制备提供统一的技术指导和要求，确保不同行业在使用或生产混合气体时有共同遵循的规范，以达到质量控制和安全使用的目地。以下是该标准的关键内容概述：
标准适用范围
本标准适用于通过精确称量各组成气体的质量，随后将这些气体混合以得到预定浓度比的混合气体。这包括但不限于实验室研究、工业生产、环境监测及医疗等领域中对特定混合气体的需求。
基本原则
- 精准称量：强调使用高精度天平对每种纯气体进行单独称量，确保混合气体成分的准确性。
- 气体纯度：规定了用于混合的气体纯度要求，以避免杂质对最终混合气体性能的影响。
- 混合容器：说明了用于混合气体的容器材质、清洁度及密封性的要求，确保不会与气体发生反应或污染气体。
- 混合程序：详细描述了气体的充装顺序、充装速率、以及混合后的均匀化处理步骤，以实现混合气体组分的均匀分布。
- 分析验证：要求对制备完成的混合气体进行浓度分析，常用方法包括气相色谱分析等，确保成品符合预期的浓度比例。
- 安全操作：涵盖了混合气体制备过程中应遵守的安全措施，包括但不限于操作人员防护、气体泄漏检测及应急处置方案。
质量控制
标准中还包括了对混合气体制备过程中的质量控制要点，如记录保存、设备校准、环境条件控制等，以保证每次制备的一致性和可追溯性。
标识与储存
对混合气体容器的标识方法进行了规定，要求明确标注气体种类、浓度、制备日期、有效期等信息，并提供了混合气体的储存条件和注意事项，确保气体的稳定性和安全性。
实施与监督
标准还涉及了实施该方法的机构或个人应遵循的监督和审核机制，确保标准执行的有效性和合规性。
如需获取更多详尽信息，请直接参考下方经官方授权发布的权威标准文档。
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- 2024-08-23 颁布
- 2025-03-01 实施
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文档简介
ICS
71.100.20
CCS
G86
中华人民共和国国家标准
GB/T44329—2024
混合气体的制备称量法
Preparationofgasmixtures—Gravimetricmethod
2024-08-23发布2025-03-01实施
国家市场监督管理总局发布
国家标准化管理委员会
GB/T44329—2024
目次
前言
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Ⅲ
1
范围
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1
2
规范性引用文件
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1
3
术语和定义
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1
4
制备方法
······························································································
2
5
制备流程
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2
6
制备前的准备
·························································································
4
6.1
制备的可行性分析
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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
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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
Ⅰ
GB/T44329—2024
前言
本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规
定起草。
请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。
本文件由中国石油和化学工业联合会提出。
本文件由全国气体标准化技术委员会（SAC/TC206）归口。
本文件起草单位：杭州新世纪混合气体有限公司、大连大特气体有限公司、昊华气体有限公司西南
分公司、北京氦普北分气体工业有限公司、武汉钢铁集团气体有限责任公司、捷贝通石油技术集团股份
有限公司、佛山三水德力梅塞尔气体有限公司、中国测试技术研究院化学研究所、衢州杭氧特种气体有
限公司、西南化工研究设计院有限公司、浙江省化工研究院有限公司、浙江省特种设备科学研究院、
浙江省生态环境低碳发展中心、大连科瑞气体有限公司、大连隆源气体科技股份有限公司、英德市西洲
气体有限公司。
本文件主要起草人：张金波、李福芬、蒋宏达、曾斌、周海斌、叶水生、周鑫、赵俊秀、齐利兵、
毛玲玲、史婉君、陈雅丽、任艳红、赖晓峰、唐霞梅、程欣、卢长敏、崔雪娇、王辅程、唐正明。
Ⅲ
GB/T44329—2024
混合气体的制备称量法
1范围
本文件描述了用称量法制备混合气体的方法和流程，规定了对制备前的准备、混合气体的充装、组
分制备含量的计算、制备的验证以及合格证的要求，给出了制备实例。
本文件适用于瓶装及气瓶集束装置包装的混合气体的制备。
2规范性引用文件
下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文
件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用
于本文件。
GB/T14850气体分析词汇
GB/T34526混合气体气瓶充装规定
GB/T34528气瓶集束装置充装规定
GB/T38523混合气
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