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ISO 7404-4:2017

Methods for the petrographic analysis of coals — Part 4: Method of determining microlithotype, carbominerite and minerite composition
9. 8. 2017.
95.99   Povučen   27. 10. 2025.

Опште информације

95.99     27. 10. 2025.

ISO

ISO/TC 27/SC 5

Međunarodni standard

73.040  

engleski  

Kupovina

Povučen

Jezik na kome želite da primite dokument.

Apstrakt

ISO 7404-4:2017 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 (about 400 nm to 700 nm). Additional blue, blue-violet or UV light excitation (365 nm to 440 nm) for better identification of liptinite in fluorescence may be used especially at low rank coals.

Životni ciklus

PRETHODNO

POVUČEN
ISO 7404-4:1988

TRENUTNO

POVUČEN
ISO 7404-4:2017
95.99 Povučen
27. 10. 2025.

REVIDIRAN OD

OBJAVLJEN
ISO 7404-4:2025

Nacionalna preuzimanja

SRPS ISO 7404-4:2020  
ISS

Metode petrografskih analiza ugljeva - Deo 4: Određivanje sastava mikrolitotipova, karbominerita i minerita

90.92   Odluka o izmeni ili reviziji standarda

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