ISO 7404-5:2009
2009-10
ISO 7404-5:2009
Résumé
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.
Informations générales
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État actuel: PubliéeDate de publication: 2009-10Stade: Norme internationale à réviser [90.92]
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Edition: 3
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Comité technique :ISO/TC 27/SC 5ICS :73.040
- RSS mises à jour
Prochaine édition en cours d'élaboration
ISO/DIS 7404-5
Cycle de vie
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Précédemment
AnnuléeISO 7404-5:1994
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Actuellement
PubliéeISO 7404-5:2009
Les normes ISO sont réexaminées tous les cinq ans
Stade: 90.92 (Sera révisée) -
Sera remplacée par
ProjetISO/DIS 7404-5