ISO 7404-2:2009 PDF

Methods for the petrographic analysis of coals — Part 2: Methods of preparing coal samples

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Title (English):

ISO 7404-2:2009

Methods for the petrographic analysis of coals — Part 2: Methods of preparing coal samples

Document status:: Withdrawn
Format:: Electronic (PDF)
Number of pages:: 12
Publication date:: September 24, 2009
Edition:: ISO IS 7404 edition 2 version 1
ICS:: 73.040

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Description (English):

ISO 7404-2:2009 specifies methods for preparing a polished particulate block from a sample of crushed coal for analysis by reflectance microscopy. These methods can also be applied to the preparation of a polished, embedded lump of coal.

Technical details

Technical committee: ISO/TC 27/SC 5 - Methods of analysis
SKU: ISO 7404-2:2009

Abstract

Overview

ISO 7404-2:2009 - Methods for the petrographic analysis of coals - Part 2: Methods of preparing coal samples defines standardized procedures for preparing polished particulate blocks (and embedded lumps) from crushed coal for analysis by reflectance microscopy. The standard describes sampling preparation, required apparatus and materials, binder selection, moulding and curing considerations, and grinding/polishing and cleaning regimes to produce a relief‑free, scratch‑free surface suitable for petrographic study.

Key topics and technical requirements

Scope and principle: Produce a representative, polished surface exposing at least 50% coal for microscopy and reflectance measurements.
Sample preparation: Air‑drying per ISO 18283, size reduction to pass a 1.00 mm sieve, and laboratory sample division (50–100 g) to ensure representativity.
Binders and mounting: Properties required include chemical inertness, compatibility with immersion oil, suitable curing temperatures (preferably

Related standards

Mentioned in the description and other ISO standards

Overview

Key topics and technical requirements

Scope and principle: Produce a representative, polished surface exposing at least 50% coal for microscopy and reflectance measurements.
Sample preparation: Air‑drying per ISO 18283, size reduction to pass a 1.00 mm sieve, and laboratory sample division (50–100 g) to ensure representativity.
Binders and mounting: Properties required include chemical inertness, compatibility with immersion oil, suitable curing temperatures (preferably

ISO 7404-2:2009 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

Related standards

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