Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group composition
NORMA vydána dne 24.9.2009
Označení normy: ISO 7404-3:2009-ed.3.0
Datum vydání normy: 24.9.2009
Počet stran: 7
Přibližná hmotnost: 21 g (0.05 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy 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.