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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 40950-2021 |
Determination of alkyl(C12～C22) trimethyl ammonium salt in cosmetics—High performance liquid chromatography tandem mass spectrometry 化妆品中烷基(C12～C22)三甲基铵盐的测定 高效液相色谱串联质谱法 |
China National Standards Determination alkyl C12～C22 |
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