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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.

Опште информације

90.92     20. 5. 2023.

ISO

ISO/TC 27/SC 5

Međunarodni standard

73.040  

engleski  

Kupovina

Objavljen

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

OBJAVLJEN
ISO 7404-4:2017
90.92 Odluka o izmeni ili reviziji standarda
20. 5. 2023.

REVIDIRAN OD

PROJEKAT
ISO/FDIS 7404-4

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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