Numéro de référence
ISO 553:1981
ISO 553:1981
© ISO 2024
ISO 553:1981
Minerais de manganèse — Dosage du vanadium — Méthode titrimétrique et méthode photométrique à l'état de phospho-vanado-tungstate
Edition 2
1981-11
1981-11
Annulée
Résumé
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.