ISO 5437-1992 标准详情
- 标准号:ISO 5437-1992
- 中文标题:酸性和陶瓷性荧石 硫酸钡含量的测定 重量法
- 英文标题:Acid-grade and ceramic-grade fluorspar; determination of barium sulfate content; gravimetric method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1992-12
The method is based on evaporation to dryness of a test portion in the presence of hydrofluoric acid and concentrated sulfuric acid, extraction of the soluble salts from the mixture, filtration, drying and weighing of the residual barium sulfate. App
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