This standard was last reviewed and confirmed in 2022. Therefore this version remains current.
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.
Status: PublishedPublication date: 2009-10
Edition: 3Number of pages: 7
Technical Committee: ISO/TC 27/SC 5 Methods of analysis
- ICS :
- 73.040 Coals
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|std 2 61||Paper|
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Stage: 90.93 (Confirmed)
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