ISO/CD 12739

Zinc sulfide concentrates— Determination of zinc content— Ion-exchange/Na2EDTA titrimetric method

General information

Current stage: 30.60 Close of voting/ comment period Oct 11, 2026

Originator: ISO

Owner: ISO/TC 183 Copper, lead, zinc and nickel ores and concentrates

Type: International Standard

Scope

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 %.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 12739:2006

NOW

IN_DEVELOPMENT
ISO/CD 12739
30.60 Close of voting/ comment period
Oct 11, 2026