ISO 7404-2:2025 PDF
Coal — Methods for petrographic analysis — Part 2: Method of preparing coal samples
Coal — Methods for petrographic analysis — Part 2: Method of preparing coal samples
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 12
- Дата публикации:
- 27 октября 2025 г.
- Издание:
- ISO IS 7404 edition 3 version 1
- ICS:
- 73.040
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.
Abstract
Overview
ISO 7404-2:2025 - "Coal - Methods for petrographic analysis - Part 2: Method of preparing coal samples" specifies standardized methods for preparing a (or a polished, embedded lump) from crushed coal for examination by . The third edition updates procedures with input from the International Committee for Coal and Organic Petrology (ICCP) and clarifies that is not acceptable for sample preparation.
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