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Overview ISO 7404-4:2017 - Methods for the petrographic analysis of coals (Part 4) defines a standardized point-count procedure for determining the proportions of microlithotypes, carbominerite and m…
Overview ISO 7404-1:2025 - Coal - Methods for petrographic analysis - Part 1: Vocabulary is the fourth edition of the ISO vocabulary for coal petrography. This document defines the core terms used in…
Overview ISO 7404-1:2016 specifies the standardized vocabulary used in the petrographic analysis of coals. It defines terms applied to maceral and microlithotype analyses and to the determination of…
Overview ISO 7404-2:2025 - "Coal - Methods for petrographic analysis - Part 2: Method of preparing coal samples" specifies standardized methods for preparing a polished particulate block (or a polish…
Overview ISO 7404-3:2025 - Coal - Methods for petrographic analysis - Part 3 specifies a standardized, microscope-based method for determining maceral group composition in coal. The procedure applies…
Overview ISO 7404-5:2025 - "Coal - Methods for petrographic analysis - Part 5: Method of determining microscopically the reflectance of vitrinite" specifies a microscope-based procedure to measure vi…
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 em…
Overview ISO 7404-5:2009 - Methods for the petrographic analysis of coals - Part 5 specifies the microscopic method for determining vitrinite reflectance. Measurements are made on well‑polished coal…
Overview ISO 7404-4:2025 - Coal - Methods for petrographic analysis - Part 4 specifies a standardized point-count method for determining the proportions of microlithotypes, carbominerite and minerite…
Overview ISO 7404-3:2009 specifies a standardized petrographic method for determining the maceral group composition of coals. The procedure applies to polished particulate blocks examined under refle…
1 Scope This part of ISO 7404 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 t…
1 Scope This document specifies a method, using a graticule with 20 crossline intersections, for determining the proportions of microlithotypes, carbominerite and minerite in coals. It applies only t…
1 Scope This part of ISO 7404 specifies the methods for determining the reflectance of vitrinite of coals microscopically on the polished surfaces, immersed in oil. The methods are applicable to coal…
1 Scope This part of ISO 7404 defines terms that are used in connection with both maceral and microlithotype analyses, and with the determination of the reflectance of vitrinite. It applies to the te…
1 Scope This part of ISO 7404 specifies a method for determining the proportions of the maceral groups (and the minerals, if desired) in coals. It is concerned only with determinations made on polish…