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.
PUBLISHED
ISO 4694:1987
PROJECT
ISO/DIS 4694
40.20
DIS ballot initiated: 12 weeks
Sep 4, 2026
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