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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 12688.1-2019 |
Test method of styrene for industrial use—Part 1：Determination of purity and hydrocarbon impurities—Gas chromatography 工业用苯乙烯试验方法 第1部分：纯度及烃类杂质的测定 气相色谱法 |
China National Standards impurities—Gas |
 English PDF |
| GB/T 14571.2-2018 |
Test method of ethylene glycol for industrial use—Part 2: Determination of purity and impurities—Gas chromatography 工业用乙二醇试验方法 第2部分：纯度和杂质的测定 气相色谱法 |
China National Standards impurities—Gas |
English PDF |
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