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BS ISO 7404-4:2017

BS ISO 7404-4:2017

Current

Current

The latest, up-to-date edition.

Methods for the petrographic analysis of coals Method of determining microlithotype, carbominerite and minerite composition

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

09-18-2017

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Material
6 Apparatus
7 Procedure
8 Expressions of results
9 Precision
10 Test report
Bibliography

Gives a method, using a graticule with 20 crossline intersections, for determining the proportions of microlithotypes, carbominerite and minerite in coals.

This document specifies a method, using a graticule with 20crossline intersections, for determining the proportions of microlithotypes, carbominerite and minerite in coals. It applies only to determinations made on polished particulate blocks using reflected white light (about 400nm to 700nm). Additional blue, blue-violet or UV light excitation (365nm to 440nm) for better identification of liptinite in fluorescence may be used especially at low rank coals.

Committee
W/-
DevelopmentNote
Supersedes 16/30333252 DC & BS 6127-4(1990). (10/2017)
DocumentType
Standard
Pages
18
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
ISO 7404-4:2017 Identical

ISO 7404-2:2009 Methods for the petrographic analysis of coals — Part 2: Methods of preparing coal samples
ISO 7404-1:2016 Methods for the petrographic analysis of coals — Part 1: Vocabulary
ISO 7404-5:2009 Methods for the petrographic analysis of coals — Part 5: Method of determining microscopically the reflectance of vitrinite
ISO 7404-3:2009 Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group composition

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Hardcopy - English
PDF - English
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