ISO 7693:1984

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Ferrotungsten - Determination of tungsten content - Cinchonine gravimetric method

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ISO 7693:1984

Ferrotungsten - Determination of tungsten content - Cinchonine gravimetric method

PUBLISH DATE 1984
ISO 7693:1984

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.

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