Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group composition
NORM herausgegeben am 24.9.2009
Bezeichnung normen: ISO 7404-3:2009-ed.3.0
Ausgabedatum normen: 24.9.2009
Zahl der Seiten: 7
Gewicht ca.: 21 g (0.05 Pfund)
Land: Internationale technische Norm
Kategorie: Technische Normen ISO
Description / 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.