ISO 7404-3:2009

Methods for the petrographic analysis of coals — Part 3: Method of determining maceral group composition

Publication date: 24 sht 2009

General information

Current stage: 90.92 Effective date: 20 maj 2023

Originator: ISO

Owner: ISO/TC 27/SC 5

Type: International Standard

ICS: 73.040

Gjuha: anglisht

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Statusi: Publikuar

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Scope

ISO 7404-3:2009 specifies a method for determining the proportions of the maceral groups (and the minerals, if desired) in coals. ISO 7404-3:2009 is applicable only to determinations made on polished particulate blocks using incident white light. For lower-rank coals, the additional use of the fluorescence mode is necessary to identify liptinites.

Life cycle

PREVIOUSLY

Revises
ISO 7404-3:1994

NOW

PUBLISHED
ISO 7404-3:2009
90.92 Standard to be revised
20 maj 2023

REVISED BY

ABANDON
ISO/WD 7404-3

IN_DEVELOPMENT
ISO/CD 7404-3

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