Natural gas - Calculation of calorific values, density, relative density and Wobbe index from composition (ISO 6976:1995 including Corrigendum 1:1997, Corrigendum 2:1997 and Corrigendum 3:1999); German version EN ISO 6976:2005— 69 стр.
Natural gas - Calculation of compression factor - Part 2: Calculation using molar-composition analysis (ISO 12213-2:2006); German version EN ISO 12213-2:2009— 39 стр.
Natural gas - Calculation of compression factor - Part 3: Calculation using physical properties (ISO 12213-3:2006); German version EN ISO 12213-3:2009— 44 стр.
Natural gas - Calculation of compression factor - Part 2: Calculation using molar-composition analysis (ISO 12213-2:1997); German version EN ISO 12213-2:2005— 38 стр.
Natural gas - Calculation of compression factor - Part 3: Calculation using physical properties (ISO 12213-3:2006); German version EN ISO 12213-3:2009— 44 стр.
Natural gas - Calculation of compression factor - Part 3: Calculation using physical properties (ISO 12213-3:1997); German version EN ISO 12213-3:2005— 39 стр.
Natural gas - Calculation of compression factor - Part 2: Calculation using molar-composition analysis (ISO 12213-2:2006); German version EN ISO 12213-2:2009— 39 стр.
Natural gas - Measurement of properties - Volumetric properties: density, pressure, temperature and compression factor (ISO 15970:2008); German version EN ISO 15970:2014— 58 стр.