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ISO 7404-4:2025

Coal — Methods for petrographic analysis — Part 4: Method of determining microlithotype, carbominerite and minerite composition
27. 10. 2025.

Опште информације

60.60     27. 10. 2025.

ISO

ISO/TC 27/SC 5

Međunarodni standard

73.040  

engleski  

Kupovina

Objavljen

Jezik na kome želite da primite dokument.

Apstrakt

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 to determinations made on polished particulate blocks using reflected white light. Additional blue, blue-violet or UV light excitation for better identification of liptinite in fluorescence can be used especially for low rank coals.

Životni ciklus

PRETHODNO

POVUČEN
ISO 7404-4:2017

TRENUTNO

OBJAVLJEN
ISO 7404-4:2025
60.60 Standard objavljen
27. 10. 2025.