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ASTM D189 - Conradson Carbon Residue of Petroleum Products


We perform testing by ASTM D189 to find an indication of relative coke-forming tendencies by measuring the residue after a sample is distilled and heated. Conradson carbon residue by ASTM D189 measures the carbon reside of oil to provide some indication of relative coke-forming propensities. A weighed quantity of the sample is placed in a crucible and subjected to destructive distillation. The residue of the sample undergoes cracking and coking reactions during a fixed period of severe heating. At the end of the heating period, the crucible containing the residue is cooled in a desiccator and weighed. The residue is calculated as a percentage of the original sample.

We also perform carbon residue testing by ASTM D4530ASTM D524IP 14, and ISO 4262. These different test methods use different instruments or procedures or are used for certain sample types. Click on the test method number to learn more about each test.

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For additional information on this test method or to purchase a copy of the method, please click HERE to open a new window and visit the ASTM website.