Filtration 2274

ASTM D2274 for Oxidation Stability of Distillate Fuel Oil requires a sample preparation procedure prior to perform the test, then A 350 ml volume of filtered middle distillate fuel is aged at 95 °C (203 °F) for 16 h while oxygen is bubbled through the sample at a rate of 3 L/h. After aging, the sample is cooled to approximately room temperature before filtering to obtain the filterable insoluble quantity. Adherent insolubles are then removed from the oxidation cell and associated glassware with trisolvent. The tri solvent is evaporated to obtain the quantity of adherent insoluble. The sum of the filterable and adherent insolubles, expressed as milligrams per 100 mL, is reported as total insolubles.