British Standards Institution

Source:: ISO
Committee:: W/- - Miscellaneous Standards
Categories:: Coals
Comment period start date:: 24/12/2024
Comment period end date:: 16/02/2025
Number of comments:: 0

Comment by:

16th Feb

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 polished particulate blocks using incident white light. For lower-rank coals, the additional use of the fluorescence mode is necessary to identify liptinites.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal (Complete)

Proposal start date:

2. Draft (Complete)

Draft start date:

23/10/2024

3. Public Comments

Public Comments start date:

24/12/2024

Public Comments end date:

16/02/2025

Learn more about the standards development process

Standards Development

BS ISO 7404-3 ISO 7404-3 Coal. Methods for petrographic analysis. Part 3: Method of determining maceral group composition

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