International Standard
ISO 7404-3:2025
Coal — Methods for petrographic analysis — Part 3: Method of determining maceral group composition
Reference number
ISO 7404-3:2025
Edition 4
2025-10
Preview
ISO 7404-3:2025
87002
Indisponible en français
Publiée (Edition 4, 2025)

ISO 7404-3:2025

ISO 7404-3:2025
87002
Langue
Format
CHF 67

Résumé

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.

Informations générales

  •  : Publiée
     : 2025-10
    : Norme internationale publiée [60.60]
  •  : 4
  • ISO/TC 27/SC 5
    73.040 
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