OIL ANALYSIS TESTS

Cleveland Open Cup Flash Point

Oil is heated in an open cup and at regular intervals a test flame is applied, until a visible flash is noted. The temperature that the oil flashes at is noted.

Oil producers detail the Flash point of their products, and deviation from this is a good indication of fuel contamination or a different product in use. This result is the lowest temperature of a sample which on application of a test flame causes the vapour to ignite and the flame propagate across the surface of the liquid.  This result will be noticeably higher than that measured by Closed Cup Flash Test.

Return to list