Повучен
The method is based on evaporation to dryness of a test portion in the presence of hydrofluoric acid and concentrated sulfuric acid, extraction of the soluble salts from the mixture, filtration, drying and weighing of the residual barium sulfate. Applies to products having barium sulfate contents equal to or greater than 0,1 % (m/m).
ПОВУЧЕН
ISO 5437:1988
ПОВУЧЕН
ISO 5437:1992
95.99
Повучен
3. 3. 2010.