International Standard
ISO 7693:1984
Ferrotungsten — Determination of tungsten content — Cinchonine gravimetric method
Reference number
ISO 7693:1984
Edition 1
1984-03
© ISO 2024
International Standard
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Published (Edition 1, 1984)
This standard was last reviewed and confirmed in 2022. Therefore this version remains current.

ISO 7693:1984

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Language
CHF 42
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Abstract

The method is applicable to ferrotungsten having tungsten contents between 70 and 90 % (m/m). Specifies principle, reagents, apparatus, sample, procedure, expression of results and test report. It also specifies, in the annex, a spectrometric method for the determination of molybdenum which interferes with the determination.

General information

  • Status
     : Published
    Publication date
     : 1984-03
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 4
  • Technical Committee :
    ISO/TC 132
    ICS :
    77.100 
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