This standard was last reviewed and confirmed in 2018. Therefore this version remains current.
The method is applicable to water soluble sulphate, in the product, but also to sulphates in a principal solution prepared in an acid medium. The principle consists in dissolution of a test portion and separation of the insoluble residue. Precipitation of the sulphate ions by barium chloride in a boiling acid medium. Filtration, washing and ignition of the precipitate. Weighing of the residue.
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|std 1 40|
|std 2 40||Paper|
A standard is reviewed every 5 years
Stage: 90.20 (Under review)
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