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ISO 7693:1984

Ferrotungsten — Determination of tungsten content — Cinchonine gravimetric method

Publication date:   Mar 1, 1984

General information

90.93 Standard confirmed   Mar 25, 2022

ISO

ISO/TC 132 Ferroalloys

International Standard

77.100   Ferroalloys

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Scope

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.

Life cycle

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PUBLISHED
ISO 7693:1984
90.93 Standard confirmed
Mar 25, 2022