ISO-7693 › Ferrotungsten - Determination of tungsten content - Cinchonine gravimetric method

ISO-7693 - 1ST EDITION - CURRENT


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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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77.100 (Ferroalloys Including classification, designation, sampling, chemical analysis, etc.)

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Document Number

ISO 7693:1984

Revision Level

1ST EDITION

Status

Current

Publication Date

March 1, 1984

Committee Number

ISO TC 132