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Withdrawn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Withdrawn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Withdrawn:This standard is no longer used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 |
| BS 4993-5:1980 | Methods of test for aluminium fluoride for industrial use Determination of moisture content (Karl Fischer method) |
| BS 4993-9:1980 | Methods of test for aluminium fluoride for industrial use Determination of sulphur content (X-ray fluorescence spectrometric method) |
| BS 5050-11(1980) : 1980 | METHODS OF TEST FOR CRYOLITE - DETERMINATION OF SULPHATE CONTENT |
| BS 5050-9(1980) : 1980 | METHODS OF TEST FOR CRYOLITE - DETERMINATION OF MOISTURE CONTENT (KARL FISHER METHOD) |
| BS 4993-7:1980 | Methods of test for aluminium fluoride for industrial use Determination of sodium content |
| BS 4993-8:1980 | Methods of test for aluminium fluoride for industrial use Determination of sulphate content |
| BS 5050-13(1983) : 1983 | METHODS OF TEST FOR CRYOLITE - DETERMINATION OF PHOSPHORUS CONTENT |
| BS 5050-10(1980) : 1980 | METHODS OF TEST FOR CRYOLITE - DETERMINATION OF MOISTURE CONTENT (GRAVIMETRIC METHOD) |
| BS 5050-12(1980) : 1980 | METHODS OF TEST FOR CRYOLITE - DETERMINATION OF SULFUR CONTENT (X-RAY FLUORESCENCE SPECTROMETRIC METHOD) |
| BS 4993-10:1983 | Methods of test for aluminium fluoride for industrial use Determination of phosphorus content |
| BS 6337-2:1983 | General methods of chemical analysis Method for determination of silicon content (reduced molybdosilicate spectrophotometric method) |
| BS 4993-6:1980 | Methods of test for aluminium fluoride for industrial use Determination of moisture content (gravimetric method) |
| BS 3145:1978 | Specification for laboratory pH meters |
| BS 2586:1979 | Specification for glass and reference electrodes for the measurement of pH |
| BS 3422(1961) : LATEST | LABORATORY DEFLECTION pH METERS |
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