Natural gas - Determination of sulfur compounds - Part 3: Determination of hydrogen sulfide, mercaptan sulfur and carbonyl sulfide sulfur by potentiometry (ISO 6326-3:1989); German version EN ISO 6326-3:1997— 8 стр.
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 1: Guidelines for tailored analysis (ISO 6974-1:2000); German version EN ISO 6974-1:2001— 22 стр.
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 2: Measuring-system characteristics and statistics for processing of data (ISO 6974-2:2001); German version EN ISO 6974-2:2002— 28 стр.
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 3: Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C<(Index)8> using two packed columns (ISO 6974-3:2000); German version EN ISO 6974-3:2001— 20 стр.
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen, carbon dioxide and C<(Index)1> to C<(Index)5> and C<(Index)6+> hydrocarbons for a laboratory and on-line measuring system using two columns (ISO 6974-4:2000); German version EN ISO 6974-4:2001— 16 стр.
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 5: Determination of nitrogen, carbon dioxide and C<(Index)1> to C<(Index)5> and C<(Index)6+> hydrocarbons for a laboratory and on-line process application using three columns (ISO 6974-5:2000); German version EN ISO 6974-5:2001— 20 стр.
Gas analysis - Comparison methods for determining and checking the composition of calibration gas mixtures (ISO 6143:2001); German version EN ISO 6143:2006— 39 стр.
Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997); German version EN ISO 6975:2005, Corrigendum to DIN EN ISO 6975:2005-09— 2 стр.
Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997); German version EN ISO 6975:2005, Corrigendum to DIN EN ISO 6975:2005-09— 2 стр.
