is ASTM-D-92 for determining the flash point and fire point of all petroleum products except fuel oil and products with flash points below 79°C (175°F). The oil sample is heated in a precisely specified brass cup containing a thermometer. At specified intervals a small flame is passed across the cup. The lowest temperature at which the vapors above the cup briefly ignite is the flash point; the temperature at which the vapors sustain combustion for at least five seconds is the fire point.

Also see Tag open cup.