Abstract

The sample of brown coal or lignite is extracted with boiling 0,005 N hydrochloric acid and the extract centrifuged. The sodium and potassium in solution are determined by any precise analytical method (for example, gravimetric method or flame photometric method).


General information 

  • Status
     : Withdrawn
    Publication date
     : 1976-06
  • Edition
     : 1
    Number of pages
     : 2
  • Technical Committee
     : ISO/TC 27 Coal and coke
  • ICS
     :
    73.040 Coals

Life cycle

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)

  2. Store
  3. Standards catalogue
  4. ICS
  5. 73
  6. 73.040
  7. ISO 1952:1976