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download between 0-24 hoursReleased: 1985
ISO 7990:1985
ISO 7990:1985-Manganese ores and concentrates-Determination of total iron content
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| Standard´s number: | ISO 7990:1985 |
| Pages: | 6 |
| Edition: | 1 |
| Released: | 1985 |
DESCRIPTION
ISO 7990:1985
Method A is applicable to products having a total iron content from 1 to 25 % (m/m), and method B is applicable to products having a total iron content from 0.2 to 2 % (m/m). ISO 7990 should be read in conjunction with ISO 4297. Specifies principle, reactions (method A only), reagents, apparatus, sampling and samples, procedure and expression of results.