GB/T 27894.7-2025 in English
VALIDNatural gas—Determination of composition and associated uncertainty by gas chromatography—Part 7:Rapid determination of helium content using two packed columns
- Issued on:2025-08-29
- Implemented on:2026-03-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$277.00
| Standard No: | GB/T 27894.7-2025 |
| Document status: | VALID |
| Title in English: | Natural gas—Determination of composition and associated uncertainty by gas chromatography—Part 7:Rapid determination of helium content using two packed columns |
| Title in Chinese: | 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 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2025-08-29 |
| Implemented on: | 2026-03-01 |
| ICS Classification: | 75.060-Natural gas |
| Chinese Classification: | E24-Natural gas |
| Professional Classification: | GB-National Standard |
| Related Keywords: | natural gas determination
natural gas wellhead natural gas gas chromatography gas chromatography part |
| Related Topics: | flash column chromatography
How to calculate absolute content by gas chromatography xrd two-phase content How to use flash column chromatography Calculations Related to Chromatography Chromatographic quantitative calculation method |
《GB/T 27894.7-2025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》由TC244（全国天然气标准化技术委员会）归口，主管部门为国家标准委。
Scope
This document describes a method for the rapid determination of nitrogen content using two packed columns using gas chromatography. This document is applicable to the rapid determination of nitrogen content in the mole fraction range of 0.005% to 40% in various natural gas types, including wellhead natural gas, pipeline natural gas, processing plant feed gas, and processed natural gas, as well as similar gas mixtures.
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