Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group composition
NORMA vydaná dňa 24.9.2009
Označenie normy: ISO 7404-3:2009-ed.3.0
Dátum vydania normy: 24.9.2009
Počet strán: 7
Približná hmotnosť: 21 g (0.05 libier)
Krajina: Medzinárodná technická norma
Kategória: 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.