ISO 7990:1985 Preview

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.


General information

  • Current status : Published
    Publication date : 1985-12
  • Edition : 1
    Number of pages : 6
  • :
    ISO/TC 132
    Ferroalloys
  • 73.060.20
    Manganese ores

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