|OELCHECK test instrument:||Micro Conradson|
|Sample quantity:||5 ml|
|Test result:||Conradson carbon residue|
|Analysis for:||heat transfer oils, compressor oils|
|Brief description:||Carbon residue indicates the amount of residue produced when 3 grams of the oil for testing is smouldered in a special Conradson apparatus under defined conditions.|
Residue in the form of carbon deposits or coke may be produced when mineral oils are exposed to excessive thermal load or do not combust completely due to a lack of oxygen. For heat transfer oils, carbon residue is an assessment criterion for oil change prolongation.
For alloyed, low-ash compressor oils (VBL, VCL), potential deposits on valves can be detected from the carbon residue.
|Underlying test standard:||DIN EN ISO 10370, ASTM D4530 (comparable results as ASTM D189)|
|Comparable methods:||DIN 51551-1: big approach |
ASTM D189: big approach