China 'GB/T 27894.7-2025
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 27894.7-2025
Natural Gas Determination of Composition by Gas Chromatography and Calculation of Associated Uncertainty Part 7: Rapid Determination of Helium Content Using Two Packed Columns 天然气 - 用气相色谱法测定组成和计算相关不确定度 - 第7部分：用两根填充柱快速测定氦气含量
Issued Date:2025/8/29
Implemented Date:2026/3/1
Issued by:
The Standardization Administration of the People's Republic of China
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