BS 4993-3:1974
Current
The latest, up-to-date edition.
Methods of test for aluminium fluoride for industrial use Determination of silica content
Hardcopy , PDF
English
28-02-1974
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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 |
Current
|
This Part of BS 4993 specifies a spectrophotometric method for the determination of the silica content of aluminium fluoride for industrial use.
NOTE The titles of the British Standards referred to in this standard are listed on the inside back cover.
| 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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