Rechercher

The method is based on drying a test portion at 105 °C and determination of the loss in mass, which corresponds to the content of water and other components volatile at that temperature. Applies to fluorspars, which may be dried material containing not less than 0,02 % (m/m) of components volatile at 105 °C, or filter cake.

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).

The principle of the method is drying of a test portion in air at 105 °C to constant mass. Determines the mean value of the moisture content.

Specifies classification by grain size, classification by bulk density, designation, moisture, cork powder content, packing in bales, sacks or cartons, marking.