标准摘要
[中文适用范围]: 规定的方法直接适用于溶解的材料或可溶于沸水的材料。 对于不易溶于沸水的固体化学品,需要进行特殊的预处理。 应采取预防措施以避免吸收水分和二氧化碳。 所有测试和分析均应在20℃的温度下进行。 为了避免错误结果,仅使用分析纯试剂。 取代 ISO 建议 R 1686-1970 [外文原描述]: The method specified are applicable directly to soluted mateials or materials soluble in boiling water. In case of solid chemicals not readily soluble in boiling water, a special preliminary treatment is necessary. Precautions shall be taken in order to avoid absorption of moisture and carbon dioxide. All tests and analyses shall be carried out at a temperature of 20 °C. In order to avoid incorrect results use only reagents of analytical grade. Replaces ISO Recommendation R 1686-1970
英文名称Sodium and potassium silicates for industrial use — Samples and methods of test — General