The temperature of the analyzer is adjusted to a minimum of 18 °C below the expected flash point. The sample is then injected into the sample cup. The operator needs to ensure that the sample and the sample cup temperature are both a minimum of 18 °C below the expected flash point (the sample and sample cup may be cooled if necessary). Then the sample cup is raised towards the oven forming a closed test chamber.
ASTM D6450 for determination of flash point of fuel oils, lube oils, solvents and other liquids by continuously closed cup tester. The measurement is made on 1 mL of sample. This method is suitable for testing samples with a flash point from 10 °C to 250 °C.
ASTM D7094 for determination of flash point of fuels including diesel/biodiesel blends, lube oils, solvents, and other liquids by a continuously closed cup tester. The measurement is made on 2 mL of sample in a 7ml cup with a heating rate of 2.5 °C per minute. This test method is suitable for testing samples with a flash point from 35 °C to 225 °C.
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