| 1. | Method for the determination of purity of arsenic trioide for export 出口三氧化二砷纯度的测定方法 |
| 2. | Determination of purity of sodium carboxymethylcellulose for detergents 洗涤剂用羧甲基纤维素钠纯度的测定 |
| 3. | Determination of purity of industrial use acrylic acid by gas chromatography 工业丙烯酸纯度的测定气相色谱法 |
| 4. | Determination of purity of industrial use acrylate esters by gas chromatography 工业丙烯酸酯纯度的测定气相色谱法 |
| 5. | Determination of purity , impurities and contaminants in biological drug products 生物药品中纯净度,污物和杂质的测定 |
| 6. | High - purity n - heptane and isooctane - determination of purity - capillary gas chromatography 高纯正庚烷和异辛烷纯度测定法 |
| 7. | Styrene for industrial use - determination of purity - capillary gas chromatography 工业用苯乙烯纯度的测定毛细管气相色谱法 |
| 8. | Fluorinated methanes for industrial uses - determination of purity - gas chromatography 工业用氟代甲烷类纯度的测定气相色谱法 |
| 9. | Standard test method for determination of purity by differential scanning calorimetry 用差示扫描量热法测定纯度的标准试验方法 |
| 10. | Petroleum p - xylene . determination of purity and hydrocarbon impurities . gas chromatographic method 石油对二甲苯纯度及烃类杂质的测定气相色谱法 |