90.93 Standard confirmed Mar 25, 2022
ISO
ISO/TC 132 Ferroalloys
International Standard
73.060.20 Manganese ores
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.
PUBLISHED
ISO 4295:1988
90.93
Standard confirmed
Mar 25, 2022