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ISO 7990:1985, Manganese ores and concentrates -- Determination of total iron content -- Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method

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ISO 7990:1985, Manganese ores and concentrates -- Determination of total iron content -- Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method

Method A is applicable to products having a total iron content from 1 to 25 % (m/m), and method B is applicable to products having a total iron content from 0.2 to 2 % (m/m). ISO 7990 should be read in conjunction with ISO 4297. Specifies principle, reactions (method A only), reagents, apparatus, sampling and samples, procedure and expression of results.
Country USA
Manufacturer Multiple. Distributed through American National Standards Institute (ANSI)
Binding Paperback
ReleaseDate 2007-08-23

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Country	USA
Manufacturer	Multiple. Distributed through American National Standards Institute (ANSI)
Binding	Paperback
ReleaseDate	2007-08-23