ISO 4694:1987 Preview
Iron ores -- Determination of fluorine content -- Ion-selective electrode method
This standard was last reviewed and confirmed in 2014. Therefore this version remains current.
The method ist applicable to a concentration range of 0,005 to 1,0 % (m/m) of fluorine in natural iron ores, and iron ore concentrates and agglomerates including sinter products. Specifies principle, reagents, apparatus, sampling and samples, procedure, expression of results, and test report. ISO 4693 includes three annexes.
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