ISO 7693:1984

Ferrotungsten — Determination of tungsten content — Cinchonine gravimetric method

Publication date: 1 mar 1984

General information

Current stage: 90.93 Effective date: 25 mar 2022

Originator: ISO

Owner: ISO/TC 132

Type: International Standard

ICS: 77.100

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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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

NOW

PUBLISHED
ISO 7693:1984
90.93 Standard confirmed
25 mar 2022

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