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ISO International Standard

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.

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  • Publication Date: 1985-12-12
  • Ref: ISO 7990:1985
  • stdNumber: 7990
  • Version: 1
  • Edition: 1
  • Pages: 6

$45.20

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