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
Under development
This Draft International Standard is in the enquiry phase with ISO members.
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
     : Under development
    Stage
    : DIS registered [40.00]
  • Edition
     : 4
    Number of pages
     : 8
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040 
  • RSS updates

Life cycle

Got a question?

Check out our Help and Support

  2. Store
  3. Standards catalogue
  4. ICS
  5. 73
  6. 73.040
  7. ISO/DIS 7404-3