Borrador del Comité
ISO/CD 7404-3
Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group composition
Reference number
ISO/CD 7404-3
ISO/CD 7404-3
Edition 4
© ISO 2024
Borrador del Comité
Resumen
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.
Informaciones generales
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Estado: En desarrolloEtapa: Cierre del periodo de observaciones [30.60]
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Edición: 4
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Comité Técnico :ISO/TC 27/SC 5
- RSS actualizaciones
Ciclo de vida
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Anteriormente
PublicadoISO 7404-3:2009
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Ahora