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Homepage>ISO Standards>ISO 7693:1984-Ferrotungsten — Determination of tungsten content — Cinchonine gravimetric method
download between 0-24 hoursReleased: 1984
ISO 7693:1984-Ferrotungsten — Determination of tungsten content — Cinchonine gravimetric method

ISO 7693:1984

ISO 7693:1984-Ferrotungsten — Determination of tungsten content — Cinchonine gravimetric method

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Standard´s number:ISO 7693:1984
Pages:4
Edition:1
Released:1984
DESCRIPTION

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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