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ISO 7936:1992 Hard coal -- Determination and presentation of float and sink characteristics -- General directions for apparatus and procedures
standard by International Organization for Standardization, 04/01/1992
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Describes sampling, preliminary treatment, test procedure using relative density separation methods, presentation of results. A general procedure for a centrifugal float and sink test is given in Annex A. A typical procedure for treating and testing a sample of raw coal is described in Annex B. Some practical hints on float and sink testing are given in annex C.