Manganese ores and concentrates — Determination of aluminium content — Photometric and gravimetric methods

The photometric method (A) is applicable to products having aluminium contents from 0,1 to 1,5 % (m/m), the oxine gravimetric method (B) is applicable to products having aluminium contents over 1,5 % (m/m). Cancels and replaces the first edition (ISO 4295:1978), of which it constitutes a technical revision. Should be read in conjunction with ISO 4297.