Open cup flash point determination
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The determination of the open flash point clearly suffers from significant errors at present. When the same sample is tested by different people using different open-cup flash point apparatuses, the results vary significantly (sometimes the temperature differences between the measurements exceed 20 degrees). Could anyone please share some instruments or methods that can provide a more accurate measurement of the open flash point?
Upon careful observation, I found that the determination of the open-flame point differs slightly in procedure, which leads to significant variations in the results. It is crucial to control the amount poured into the measuring cup (it must be exactly full to the mark). Additionally, the nozzle is gently swept from time to time to enable the flash point to be measured promptly.
We usually test in closed cups; I really haven’t paid attention to this issue with open cups before – I just learned about it
It’s mainly due to improper operation; please read the operating procedures carefully before proceeding.
I’ve learned about it, and the company happens to want to purchase a flash point determination device.