This standard was last reviewed and confirmed in 2022. Therefore this version remains current.
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.
Status: PublishedPublication date: 1976-07
Edition: 1Number of pages: 3
Technical Committee: ISO/TC 226 Materials for the production of primary aluminium
- ICS :
- 71.100.10 Materials for aluminium production
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Stage: 90.93 (Confirmed)
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