ISO-7404-5 Methods for the petrographic analysis of coals - Part 5: Method of determining microscopically the reflectance of vitrinite

ISO-7404-5 - 3RD EDITION - CURRENT
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ISO 7404-5:2009 specifies the methods for determining the reflectance of vitrinite of coals microcopically 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 ISO 7404-5:2009.

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73.040 (Coals Including lignites Coal products, see 75.160.10)

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Document Number

ISO 7404-5:2009

Revision Level

3RD EDITION

Status

Current

Publication Date

Oct. 1, 2009

Committee Number

ISO/TC 27