Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 42238-2022 |
Surfactants - Determination of free propylene oxide in propylene oxide polymeric surfactants - Gas chromatography {译} 表面活性剂 环氧丙烷聚合型表面活性剂中游离环氧丙烷的测定 气相色谱法 |
China National Standards Surfactants Determination free |
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