Natural gas - Determination of composition and associated uncertainty by gas chromatography - Part 3: Precision and bias (ISO/DIS 6974-3:2017); German and English version prEN ISO 6974-3:2017
Natural gas and biomethane for use in transport and biomethane for injection in the natural gas network - Part 2: Automotive fuels specification; German version EN 16723-2:2017— 27 стр.
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— 17 стр.
