ISO 4295:1988 Preview
Manganese ores and concentrates -- Determination of aluminium content -- Photometric and gravimetric methods
This standard was last reviewed and confirmed* in 2016.
*Therefore this version remains current
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.