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ISO 7990:1985 (R2022)
Manganese ores and concentrates — Determination of total iron content — Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method
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Summary
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.
Notes
90.93 : Norme internationale confirmée
Technical characteristics
| Publisher | International Organization for Standardization (ISO) |
| Publication Date | 12/12/1985 |
| Confirmation Date | 03/25/2022 |
| Edition | 1 |
| Page Count | 6 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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