Abstract

This document provides guidelines and requirements for the analysis of natural gas and natural gas substitutes using gas chromatographic methods. It is intended for use in conjunction with ISO 6974-1, ISO 6974-2 and ISO 6974-3.

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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