In how many degrees increments is the temperature increased after applying the test flame during a flashpoint test until flashpoint is achieved?

During a flashpoint test, the temperature is carefully increased to determine the flashpoint of a substance. The standardized procedure involves raising the temperature in small increments to ensure precise measurement of the flashpoint. Increasing the temperature by 2°F increments provides an accurate and consistent approach to identifying the exact point at which the vapor starts igniting when exposed to a test flame.

Choosing an increment that is too small would extend the test time and could potentially result in a confusion of readings, while larger increments might risk overshooting the flashpoint without capturing the precise temperature at which ignition occurs. Thus, the 2°F increment strikes the right balance for accuracy and efficiency in the flashpoint determination process.