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ISO 7990:1985
Manganese ores and concentrates -- Determination of total iron content -- Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method
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Abstract
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.
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Edition: 1 (Monolingual) ICS: 73.060.20 Status: Published Stage: 90.20 (2013-04-15) TC/SC: ISO/TMB Number of Pages: 6 -
Revises: ISO/R 313:1963
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No corrigenda or amendments available
