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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| QB/T 4820-2015 |
pH-indicator base paper ph试纸原纸 |
China Light Industry
Standards pH indicator base |
 English PDF |
| HG/T 4015-2008 |
Chemical reagent. General method for the determination of pH ranges corresponding the colour transition of acid-base indicators 化学试剂 酸碱指示剂pH变色域测定通用方法 |
China Chemical Industry
Standards pH indicator base |
English PDF |
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