Draft
International Standard
ISO/DIS 7404-3
Coal — Methods for petrographic analysis — Part 3: Method of determining maceral group composition
Reference number
ISO/DIS 7404-3
Edition 4
© ISO 2024
Draft International Standard
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Under development
This Draft International Standard is in the enquiry phase with ISO members.
Will replace ISO 7404-3:2009

ISO/DIS 7404-3

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Format
CHF 63
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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
     : Under development

    You can help develop this draft international standard by contacting your national member

    Stage
    : DIS ballot initiated: 12 weeks [40.20]
  • Edition
     : 4
    Number of pages
     : 8
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040 
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