This International Standard describes the specifications for the quantitative analysis of the following components of natural gas:helium,hydrogen,argon,oxygen,nitrogen,carbon dioxide,saturated hydrocarbons from C1 to C5,hydrocarbon fractions from C6 upwards,aromatic compounds as benzene and toluene.The gas-chromatographic methods determine the components in the following ranges: oxygen:0,001%(n/n) to 0,5%(n/n). helium: 0,001%(n/n) to 0,5%(n/n). hydrogen: 0,001%(n/n) to 0,5%(n/n). argon: 0,001%(n/n) to 0,5%(n/n).nitrogen: 0,001%(n/n) to 40%(n/n). carbon dioxide: 0,001%(n/n) to 40%(n/n).methane:50%(n/n) to 100%(n/n).ethane:0,002%(n/n) to 15%(n/n).propane: 0,0
EN ISO 6975:2005 history
2005EN ISO 6975:2005 Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997)