30.60 11. 10. 2026.
ISO
ISO/TC 183
Međunarodni standard
ISO 12739:2006 specifies an ion-exchange/EDTA titrimetric method for the determination of the mass fraction of zinc in zinc concentrates. The method is applicable to zinc sulfide concentrates having a mass fraction of zinc in the range from 11 % to 62 %.
OBJAVLJEN
ISO 12739:2006
PROJEKAT
ISO/CD 12739
30.60
Završetak izjašnjavanja o nacrtu komisije standarda
11. 10. 2026.