Published
This document specifies a method for determining the proportions of the maceral groups (and the minerals, if desired) in coals. It is concerned only with 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WITHDRAWN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
PUBLISHED
ISO 7404-3:2025
60.60
Standard published
Oct 27, 2025