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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 30431-2020 |
Gas chromatography for laboratory 实验室气相色谱仪 |
China National Standards Gas chromatography laboratory |
 English PDF |
| GB/T 27894.5-2012 |
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 5: Determination of nitrogen,carbon dioxideand C1 to C5 and C6+ hydrocarbons for a laboratory and on-line process application using three columns 天然气 在一定不确定度下用气相色谱法测定组成 第5部分：实验室和在线工艺系统中用三根色谱柱测定氮、二氧化碳和C1至C5及C6+的烃类 |
China National Standards Gas chromatography laboratory |
English PDF |
| GB/T 27894.4-2012 |
Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4: Determination of nitrogen,carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on-line measuring system using two columns 天然气 在一定不确定度下用气相色谱法测定组成 第4部分：实验室和在线测量系统中用两根色谱柱测定氮、二氧化碳和C1至C5及C6+的烃类 |
China National Standards Gas chromatography laboratory |
English PDF |
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