标准摘要
[中文适用范围]： 该方法的原理在于溶解测试部分并通过配衡过滤器过滤溶液。 在约 50°C 下洗涤不溶物，直至洗涤液不再呈碱性。 干燥残留物并称重。 取代 ISO 建议 R 746-1968。 [外文原描述]： The principle of the method consists in dissolution of a test portion and filtration of the solution through a tared filter. Washing of the insoluble matter at approximately 50 C until the washings are no longer alkaline. Drying of the residue and weighing. Replaces ISO Recommendation R 746-1968.
英文名称Sodium carbonate for industrial use — Determination of matter insoluble in water at 50 degrees C