Application Notes:
 

closed cup


is the method for determining the flash point of fuels, solvents, cutback asphalts, and some light lube fractions, utilizing a covered container in which the test sample is heated and periodically exposed to a small flame introduced through a shuttered opening. The lowest temperature at which the vapors above the sample briefly ignite is the flash point.

Also see Pensky-Martens closed tester, Tag closed tester.

 

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