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Petroleum products -- Determination of carbon residue -- Conradson method
The principle of the method specified is placing a weighed test portion in a crucible and subjecting to destructive distillation.
The residue undergoes cracking and coking reactions during a fixed period of severe heating.
At the end of the specified heat period, the test crucible containing the carbonaceous residue is cooled in a desiccator and weighed. The residue remaining is calculated as a mass percentage of the original test portion.
The method may be used to determine amounts of carbon residues in the range of 0,01 % (m/m) to 30,0 % (m/m), left after evaporation and pyrolysis.
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