GSO ISO 7990:2017

ISO 7990:1985
Gulf Standard   Current Edition · Approved on 03 October 2017

Manganese ores and concentrates -- Determination of total iron content -- Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method

GSO ISO 7990:2017 Files

English 6 Pages
Current Edition Reference Language

GSO ISO 7990:2017 Scope

This International Standard specifies two methods for the determination of the total iron content of manganese ores and concentrates : method A : titrimetric method after reduction, applicable to products having a total iron content from 1 to 25 % (m/m); method B : sulfosalicylic acid spectrophotometric method, applicable to products having a total iron content from 0,2 to 2 % (m/m). It should be read in conjunction with ISO 4297.

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