Abstract

This document gives guidance for obtaining the best analysis results possible from a Gas Chromatograph (GC) when analysing natural gas and natural gas substitutes for combined use with the most recent versions of ISO 6974's part 1, 2 and 3. (Examples are given.)

Begin

2023-01-16

WI

00238093

Planned document number

DIN EN ISO 6974-4

Project number

06236461

Responsible national committee

NA 062-05-73 AA - Gas analysis and gas quality  

Responsible european committee

CEN/TC 238 - Test gases, test pressures, appliance categories and gas appliance types  

Responsible international committee

ISO/TC 193/SC 1/WG 17 - Analysis with Associated Uncertainty  

draft standard

Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 4: Guidance on gas analysis (ISO/DIS 6974-4:2025); German and English version prEN ISO 6974-4:2025
2025-04
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previous edition(s)

Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997); German version EN ISO 6975:2005, Corrigendum to DIN EN ISO 6975:2005-09
2008-09

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Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997); German version EN ISO 6975:2005
2005-09

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Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and C₁ to C₈ hydrocarbons using three capillary columns (ISO 6974-6:2002); German version EN ISO 6974-6:2005
2005-08

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Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 5: Isothermal method for nitrogen, carbon dioxide, C₁ to C₅ hydrocarbons and C₆₊ hydrocarbons (ISO 6974-5:2014); German version EN ISO 6974-5:2014
2014-10

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Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen, carbon dioxide and C₁ to C₅ and C₆₊ hydrocarbons for a laboratory and on-line measuring system using two columns (ISO 6974-4:2000); German version EN ISO 6974-4:2001
2002-06

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Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 3: Precision and bias (ISO 6974-3:2018); German version EN ISO 6974-3:2018
2019-02

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