ISO 7404-4:2017 Preview

Methods for the petrographic analysis of coals -- Part 4: Method of determining microlithotype, carbominerite and minerite composition

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.


General information

  • Status :  Published
    Publication date : 2017-08
  • Edition : 2
    Number of pages : 9
  • :
    ISO/TC 27/SC 5
    Methods of analysis
  • 73.040
    Coals

Buy this standard

Format Language
PDF + ePub
Paper
  • CHF58

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information

Subscribe