
Coal — Methods for petrographic analysis — Part 2: Method of preparing coal samples
NORM herausgegeben am 27.10.2025
Bezeichnung normen: ISO 7404-2:2025-ed.3.0
Ausgabedatum normen: 27.10.2025
Zahl der Seiten: 12
Gewicht ca.: 36 g (0.08 Pfund)
Land: Internationale technische Norm
Kategorie: Technische Normen ISO
Description / Abstract: This document specifies methods for preparing a polished particulate block from a sample of crushed coal for analysis by reflected light microscopy. These methods can also be applied to the preparation of a polished, embedded lump of coal.