BS 4140-19:1986
Current
The latest, up-to-date edition.
Methods of test for aluminium oxide Determination of boron content
Hardcopy , PDF
English
28-02-1986
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Gives a curcumin spectrophotometric method for determining boron content of aluminium oxide used for the production of aluminium. Applicable to boron contents, expressed as boron oxide greater than 0,0006%.
| Committee |
W/-
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| DevelopmentNote |
Also numbered as ISO 2865 Supersedes 85/52368 DC and BS 4140:ADD3(1974) (07/2005) Reviewed and confirmed by BSI, November 2016. (11/2016)
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| DocumentType |
Standard
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| Pages |
12
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| PublisherName |
British Standards Institution
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| Status |
Current
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| Supersedes |
This International Standard specifies a curcumin spectrophotometric method for the determination of the boron content of aluminium oxide primarily used for the production of aluminium.
The method is applicable to boron contents, expressed as boron oxide (B2O3), greater than 0,000 6 % [i.e. 0,000 2 % expressed as boron (B)].
NOTE The sensitivity of the method, as may be gathered from the calibration curve, is in fact higher. In the case of a very low blank reading, and with sufficiently sensitive apparatus, the lower limit of application of the method may be extended to 0,000 08 % of boron oxide (B2O3), corresponding to 0,000 025 % of boron (B).
| Standards | Relationship |
| ISO 2865:1973 | Identical |
| BS 4140-20:1980 | Methods of test for aluminium oxide Sampling |
| BS 4140-1:1986 | Methods of test for aluminium oxide Preparation and storage of test samples |
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