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ISO/R 313:1963Withdrawn

Methods of chemical analysis of manganese ores — Determination of total iron content

Méthodes d'analyse chimique des minerais de manganèse — Détermination de la teneur totale en fer

This edition has been replaced by ISO 7990:1985.

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Replaced by

ISO 7990:1985PublishedManganese ores and concentrates — Determination of total iron content — Titrimetric method after reduction and sulfosalicylic acid spectrophotometric methodInternational Standard · Published 12 Dec 1985 · ISO/TC 132