2.1 General case The method is applicable to the determination of water-soluble sulfates in sodium chloride for industrial use. 2.2 Special case Determination of sulfates in a main solution prepared in an acidic medium. NOTE — Whatever the conditions adopted, all the determinations inherent to the same analysis must be carried out in the same medium, except the determination of chlorides, which is always carried out from a solution in water.
NBN T 03-162-1980 history
1980NBN T 03-162-1980 Sodium chloride for industrial use - Determination of sulphate content - Barium sulphate gravimetrie method