Hydrochloric acid for industrial use — Determination of soluble sulphates — Turbidimetric method
NORMA vydána dne 1.11.1973
Designation standards: ISO 2762:1973
Publication date standards: 1.11.1973
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: International technical standard
Kategorie: Technické normy ISO
Description / Abstract: The turbidimetric method is applicable to products containing less than 0.1 % (m/m) of soluble sulphates. The principle consists in evaporation of a test portion to dryness and solution of the residue in hydrochloric acid. Measurement of the turbidity obtained by precipitation, under well defined conditions, of barium sulphate. Has also been approved by the IUPAC.