FLASH POINT BY CLEVELAND OPEN CUP: ASTM D92
(Equivalent Test Methods: IP 36, ISO 2592, DIN 51376, JIS K 2265, and AFNOR T60-118)
EXPLANATION
This test method covers the determination of the flash and fire point of all petroleum products except fuel oils and those having an open cup flash <175° F (79° C).

TEST SUMMARY
The test cup is filled to a specified level with sample. The temperature is rapidly increased at first, and then at a slow constant rate as the flash point is approached. At specified intervals a small test flame is passed across the cup. The lowest temperature at which the vapors above the surface of the liquid ignites is taken as the flash point. The test is continued until the application of the test flame causes the oil to ignite and burn for at least 5 s. This temperature is called the fire point.

TEST PRECISION