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1.1 ,These test methods cover the determination of the flash point of petroleum products in the temperature range from 40 ,°,C to 370 ,°,C by a manual Pensky-Martens closed-cup apparatus or an automated Pensky-Martens closed-cup apparatus, and the determination of the flash point of biodiesel in the temperature range of 60 ,°,C to 190 ,°,C by an automated Pensky-Martens closed cup apparatus.
Note 1: ,Flash point determinations above 250 ,°,C can be performed, however, the precision has not been determined above this temperature. For residual fuels, precision has not been determined for flash points above 100 ,°,C. The precision of in-use lubricating oils has not been determined. Some specifications state a D93 minimum flash point below 40 ,°,C, however, the precision has not been determined below this temperature.