Sedimentation resistance of middle-distillate fuels containing pour point depressants

Settling of paraffin crystals in cooled middle distillate fuels

“…Conversely, the mechanism of action of the WASA has received very little attention and the current state of the art is mainly based on results obtained from the normalized tests of the practitioners [9, [12][13][14]. These time-consuming and subjective methods allow neither accurate measurements of the amount of settled paraffin crystals nor the determination of the settling rate.…”