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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.
| Author | BSI |
|---|---|
| Editor | BSI |
| Document type | Standard |
| Format | File |
| Confirmation date | 2016-06-01 |
| EAN ISBN | 0 580 07999 6 |
| ICS | 71.060.50 : Salts |
| Number of pages | 10 |
| Cross references | ISO 2369 |
| Modified by | AMD 2028 published June 1976 effective June 1976 Free of charge incorporated |
| Year | 1970 |
| Country | United Kingdom |
| Keyword | BS 4993:Part 3:1974 |