ISO 7404-3:2025

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

Datum objavljivanja: 27. 10. 2025.

Опште информације

Trenutna faza: 60.60 Effective date: 27. 10. 2025.

Inicijator: ISO

Pripada: ISO/TC 27/SC 5

Vrsta: Međunarodni standard

ICS: 73.040

Jezik: engleski

Kupovina

Status: Objavljen

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Apstrakt

This document 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.

Životni ciklus

PRETHODNO

POVUČEN
ISO 7404-3:2009

TRENUTNO

OBJAVLJEN
ISO 7404-3:2025
60.60 Standard objavljen
27. 10. 2025.