This International Standard specifies a flame atomic absorption spectrometric method for the determination of the total and alkali-soluble calcium and magnesium contents of crude sodium borates for industrial use. The method is applicable to products in which the calcium con-tent, expressed as calcium, is not lower than 0,02 % (m/m) and not greater than 1,0 % (m/m) and in which the magnesium content, expressed as magnesium, is not lower than 0,01 % (m/m) and not greater than 0,2 % (m/m).
BS 5688-28-1986由英国标准学会 GB-BSI 发布于 1986-07-31,并于 1986-07-31 实施。
BS 5688-28-1986 在中国标准分类中归属于: G10 无机化工原料综合,在国际标准分类中归属于: 71.060.50 盐。
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