20.98 Dec 6, 2022
ISO
ISO/TC 27/SC 5
International Standard
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.
WITHDRAWN
ISO 7404-3:2009
ABANDON
ISO/WD 7404-3
20.98
Project deleted
Dec 6, 2022