30.20 Aug 15, 2026
ISO
ISO/TC 183
International 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 %.
PUBLISHED
ISO 12739:2006
PROJECT
ISO/CD 12739
30.20
CD study/ballot initiated
Aug 15, 2026
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