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immediate downloadReleased: 1984-03-01
ISO 7693:1984
ISO 7693:1984 - Ferrotungsten — Determination of tungsten content — Cinchonine gravimetric method
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English PDF
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| Standard´s number: | ISO 7693:1984 |
| Edition: | 1 |
| Released: | 1984-03-01 |
| Pages (English): | 4 |
| Pages (French): | 4 |
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.