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immediate downloadReleased: 1986-02-28
BS 4140-19:1986
Methods of test for aluminium oxide Determination of boron content
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| Standard number: | BS 4140-19:1986 |
| Pages: | 12 |
| Released: | 1986-02-28 |
| ISBN: | 0 580 15016 X |
| Status: | Standard |
DESCRIPTION
BS 4140-19:1986
This standard BS 4140-19:1986 Methods of test for aluminium oxide is classified in these ICS categories:
- 71.100.10 Materials for aluminium production
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).