GOST R 54269
Fuels. Method for determination of cold filter plugging point
The scope of the method is to cool the sample under specified conditions at intervals of 1 °C and draw it into a pipette under a controlled vacuum through a standardized wire mesh filter. The procedure is repeated after each decrease in the sample temperature by 1 °C. The test is continued until the temperature at which the amount of paraffin crystals released from the solution does not allow the fuel to pass through the filter or slows down its flow so that the filling time of the pipette exceeds 60 s or until the fuel stops draining completely into the test vessel before cooling by another 1 °C.