11.1.4 Turn the stirring device at 90 r ⁄min to 120 r ⁄min, stirring in a downward direction. (Warning—Meticulous attention to all details relating to the ignition source, size of test flame or intensity of the electric ignitor, rate of temperature increase, and rate of dipping the ignition source into the vapor of the test specimen is desirable for good results.)
11.1.5 Application of Ignition Source:
11.1.5.1 If the test specimen is expected to have a flash point of 110 °C or 230 °F or below, apply the ignition source when the temperature of the test specimen is 23 °C 6 5 °C or 41 °F 6 9 °F below the expected flash point and each time thereafter at a temperature reading that is a multiple of 1 °C or 2 °F Discontinue the stirring of the test specimen and apply the ignition source by operating the mechanism on the test cover which controls the shutter so that the ignition source is lowered into the vapor space of the test cup in 0.5 s, left in its lowered position for 1 s, and quickly raised to its upward position