International Standard
ISO 7404-4:2017
Methods for the petrographic analysis of coals — Part 4: Method of determining microlithotype, carbominerite and minerite composition
Reference number
ISO 7404-4:2017
Edición 2
2017-08
International Standard
Vista previa
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ISO 7404-4:2017
69224
No disponible en español
Publicado (Edición 2, 2017)
Esta norma se revisó y confirmó por última vez en 2023. Por lo tanto, esta versión es la actual.

ISO 7404-4:2017

ISO 7404-4:2017
69224
Formato
Idioma
CHF 63
Convertir Franco suizo (CHF) a tu moneda

Resumen

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.

Informaciones generales

  •  : Publicado
     : 2017-08
    : Norma Internacional para revisar [90.92]
  •  : 2
     : 9
  • ISO/TC 27/SC 5
    73.040 
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