The sample is heated under standard conditions to a final temperature of 600 C. The coke residue obtained is classified by reference to a series of standard residues. If the coke residue produced is so swollen that it fills the crosssection of the retort tube, the determination is repeated with the coal admixed with a suitable quantity of electrode carbon or equivalent material.

General information

  • Status :  Withdrawn
    Publication date : 1982-02
  • Edition : 2
    Number of pages : 9
  • :
    ISO/TC 27/SC 5
    Methods of analysis
  • 73.040

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