ISO 5437:1992
$12.35
Acid-grade and ceramic-grade fluorspar — Determination of barium sulfate content — Gravimetric method
| Published By | Publication Date | Number of Pages |
| ISO | 1992-12 | 6 |
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).
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