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Status : Active
Standard Type : Main
Document No : ISO 7404-2:2025
Document Year : 2025
Pages : 12
Edition : 3
Section Volume : Methods of analysis (ISO/TC 27/SC 5.)
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.