International Standard
ISO 7404-2:2025
Coal — Methods for petrographic analysis — Part 2: Method of preparing coal samples
Reference number
ISO 7404-2:2025
Edition 3
2025-10
© ISO 2026
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Published (Edition 3, 2025)

ISO 7404-2:2025

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CHF 67
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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.

General information

  • Status
     : Published
    Publication date
     : 2025-10
    Stage
    : International Standard published [60.60]
  • Edition
     : 3
    Number of pages
     : 12
  • Technical Committee :
    ISO/TC 27/SC 5
    ICS :
    73.040 
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