ISO 5437:1992 PDF
Acid-grade and ceramic-grade fluorspar — Determination of barium sulfate content — Gravimetric method
Open preview (PDF)Acid-grade and ceramic-grade fluorspar — Determination of barium sulfate content — Gravimetric methodTitle (English):
ISO 5437:1992
Acid-grade and ceramic-grade fluorspar — Determination of barium sulfate content — Gravimetric method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 3
- Publication date:
- December 3, 1992
- Edition:
- ISO IS 5437 edition 2 version 1
- ICS:
- 73.080
Description (English):
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).
Technical details
- Technical committee
- ISO/TC 175 - Fluorspar
- SKU
- ISO 5437:1992
