BS ISO 7404-5:2009
Current
The latest, up-to-date edition.
Methods for the petrographic analysis of coals Method of determining microscopically the reflectance of vitrinite
Hardcopy , PDF
English
30-11-2009
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Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Reagents and materials
6 Apparatus
7 Preparation of coal sample
8 Procedure
9 Reporting of results
10 Precision
11 Test report
Bibliography
Describes the methods for determining the reflectance of vitrinite of coals microcopically on the polished surfaces, immersed in oil.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes BS 6127-5(1995) and 07/30145814 DC. (11/2009) Reviewed and confirmed by BSI, April 2016. (03/2016)
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| DocumentType |
Standard
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| Pages |
26
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| PublisherName |
British Standards Institution
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| Status |
Current
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| Supersedes |
This part of ISO7404 specifies the methods for determining the reflectance of vitrinite of coals microscopically on the polished surfaces, immersed in oil. The methods are applicable to coals from single seams or coal blends covering the whole range of low-, medium- and high-rank coal.
Vitrinite reflectance measurements can be used to characterize the components within blends. Measures can be taken to correct for the vitrinite percentage within each of the components of the blend or to determine the proportion of components in a blend, particularly when the components have dissimilar vitrinite contents. This method necessitates the identification of vitrinite by the analyst.
Reflectance measurements on vitrinite obtained by interpreting the results from an automated system, are outside the scope of this part of ISO7404.
| Standards | Relationship |
| ISO 7404-5:2009 | 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 11760:2005 | Classification of coals |
| ISO 7404-3:2009 | Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group composition |
| AS 2856.3-2000 | Coal petrography Methods for microscopical determination of the reflectance of coal macerals (Reconfirmed 2013) (Reconfirmed 2023) |
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