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ISO 553:1981Withdrawn

Manganese ores — Determination of vanadium content — Titrimetric method and phosphotungstovanadate photometric method

Minerais de manganèse — Dosage du vanadium — Méthode titrimétrique et méthode photométrique à l'état de phospho-vanado-tungstate

Abstract / scope

Method I is applicable to manganese ores having vanadium contents greater than 0.05 % (m/m), method II is applicable to manganese ores having vanadium contents less than 0.05 % (m/m). This second edition cancels and replaces the first edition (i.e. ISO 553-1975). Should be read in conjunction with ISO 4297.

Life cycle

Replaced by

ISO/CD 553Deleted (project abandoned)Manganese ores and concentrates — Determination of vanadium content — Extraction-spectrometric and flame atomic absorption spectrometric methodsInternational Standard · ISO/TC 65