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.
Status: WithdrawnPublication date: 1982-02
Edition: 2Number of pages: 9
Technical Committee: ISO/TC 27/SC 5 Methods of analysis
- ICS :
- 73.040 Coals
ISO 502:1982Stage: 95.99
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