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Homepage>ISO Standards>ISO 7990:1985-Manganese ores and concentrates — Determination of total iron content — Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method
download between 0-24 hoursReleased: 1985
ISO 7990:1985-Manganese ores and concentrates — Determination of total iron content — Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method

ISO 7990:1985

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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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.
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