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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| HG/T 3073-1999 |
Rubber compounding ingredients. Silica, precipitated, hydrated. Determination of specific surface area. Nitrogen absorption method 橡胶配合剂 沉淀水合二氧化硅比表面积的测定 氮吸附方法 |
China Chemical Industry
Standards Determination specific surface |
 English PDF |
| JJG(JC)107-1999 |
Verification regulation for Determination specific surface area of air permeability apparatus |
China Metrological
Standards Determination specific surface |
English PDF |
| HG/T 2347.8-1992 |
Determination of specific surface area of γ·Fe(index 2)O(index 3)magnetic powder γ-Fe2O3磁粉比表面积的测定 |
China Chemical Industry
Standards Determination specific surface |
English PDF |
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