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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 13255.1-2009 |
Test methods of caprolactam for industrial use - Part 1: Determination of colourity of 50% aqueous caprolactam solution - Spectrometric method 工业用己内酰胺试验方法 第1部分：50%水溶液色度的测定 分光光度法 |
China National Standards colourity |
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