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ISO 7404-2:2025

Coal — Methods for petrographic analysis — Part 2: Method of preparing coal samples

Publication date:   Oct 27, 2025

General information

60.60   Standard published   Oct 27, 2025

ISO

ISO/TC 27/SC 5 Methods of analysis

International Standard

73.040   Coals

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 7404-2:2009

NOW

PUBLISHED
ISO 7404-2:2025
60.60 Standard published
Oct 27, 2025