A 300 ml sample of biodiesel is stored at 4.4C for 16 hr, amn dthen allowed to warn up to 20C-22C. The sample is then vacuum-filtered through a single 0.7 um glass fibre filter at a cotrolled vacuum pressure of 21 to 25 in. of Hg below atmospheric pressure (Figure 1). The time for the 300 ml sample to be completely filtered is recorded as the CSFT time.

Main Research: Yung Chee Liang