BS 4993-3:1974
Withdrawn
Methods of test for aluminium fluoride for industrial use Determination of silica content
Hardcopy , PDF
English
02-28-1974
05-22-2026
Cooperating organizations
Foreword
Method
1. Scope
2. Field of application
3. Principle
4. Reagents
5. Apparatus
6. Procedure
7. Calculation
Fusion of a test portion with sodium carbonate/boric acid, dissolution of the melt in nitric acid, formation of the yellow (oxidized) silico-molybdic complex, reduction to the blue form and spectrophotometric measurement at 815 nm.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes 71/53613 DC. (07/2005) Reviewed and confirmed by BSI, December 2011. (11/2011)
|
| DocumentType |
Standard
|
| Pages |
10
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
Withdrawn:This standard is no longer used
| Standards | Relationship |
| ISO 2369:1972 | Similar to |
| UNE-EN ISO 15187:2003 | Identical |
This standard has been withdrawn and is no longer current. No replacement edition is available.
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