GOST 31371.3-2008
天然气.气相色谱法测定规定的不确定度的组分.第3部分:用两填充柱测定氢、氦、氧、氮、二氧化碳和碳至C8的烃类
Natural gas. Determination of composition with defined uncertainty by gas chromatography method. Part 3. Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columns