标准摘要
[中文适用范围]： 适用于SO4含量大于0.05%（m/m）的产品。 覆盖供试品在盐酸中溶解并在盐酸溶液中蒸发干燥。 将残余物溶解在盐酸溶液中。 使用分光光度计在约470 nm波长处或光电吸光光度计测量在特定条件下沉淀硫酸钡而获得的浊度。 [外文原描述]： Applicable to products having SO4 contents of more than 0.05 % (m/m). Covers the dissolution of the test portion in hydrochloric acid and evaporation in hydrochloric acid solution for drying. Dissolution of the residue in a hydrochloric acid solution. Measurement of the turbidity obtained by precipitation, under specified conditions, of barium sulphate using a spectrophotometer at a wavelength of about 470 nm or a photoelectric absorptiometer.
英文名称Sodium fluoride primarily used for the production of aluminium — Determination of soluble sulphates content — Turbidimetric method