ISO/CD 7404-3
Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group composition
Reference number
ISO/CD 7404-3
Edition 4
Committee Draft
ISO/CD 7404-3
A draft is being reviewed by the committee.
Will replace ISO 7404-3:2009


ISO 7404-3:2009 specifies a method for determining the proportions of the maceral groups (and the minerals, if desired) in coals. ISO 7404-3:2009 is applicable only to determinations made on polished particulate blocks using incident white light. For lower-rank coals, the additional use of the fluorescence mode is necessary to identify liptinites.

General information

  •  : Under development
    : Close of comment period [30.60]
  •  : 4
  • ISO/TC 27/SC 5
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