ISO 7936:1992

Hard coal — Determination and presentation of float and sink characteristics — General directions for apparatus and procedures

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.