Reference number
ISO/WD 7404-3
© ISO 2024
Working draft
ISO/WD 7404-3
Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group composition
Edition 4
Deleted
Deleted
A working group has prepared a draft.
Will replace ISO 7404-3:2009

Abstract

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

  • Status
     : Deleted
    Stage
    : Project deleted [20.98]
  • Edition
     : 4
  • Technical Committee :
    ISO/TC 27/SC 5
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