International Organization for Standardization (ISO)
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ISO 8833:1989
Scope
Specifies methods for sampling and testing of magnetite. The specified tests should ensure that the properties which make magnetite suitable for coal preparation purpose are simply and adequately tested. These properties are: moisture content, particle size distribution, total magnetics content, relative density, total iron(II) content, fundamental magnetic properties.
ISO 8833:1989 history
1989ISO 8833:1989 Magnetite for use in coal preparation; test methods