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Methods of test for phosphoric acid (orthophosphoric acid) for industrial use -- Determination of soluble sulphate content (potentiometric method)
This Part of BS 4258 describes a potentiometric method for the determination of the soluble sulphate content of phosphoric acid (orthophosphoric acid) for industrial use.
The method is applicable to products having sulphate contents, expressed as SO4, not lower than 0.4 % (m/m).
NOTE: The titles of the publications referred to in this Part of this standard are listed on the inside back cover.
Applicable to products having sulphate contents of not less than 0.4% by mass.
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