Flashpoint—TB/ALL.

The term flashpoint indicates the temperature in degrees Fahrenheit at which a liquid gives off a flammable vapor when heated in an open-cup tester. For the purpose of the regulations in this subchapter, flashpoints determined by other testing methods will be equivalent to those determined with an open-cup tester, as follows: Table 30.10-27—Equivalent Flashpoints [In degrees Fahrenheit] Open-cup tester Tag closed-cup tester (A.S.T.M.) Pensky-Martens closed tester (A.S.T.M.) 80 75 150 140 [CGFR 65-50, 30 FR 16657, Dec. 30, 1965, as amended by USCG-2014-0688, 79 FR 58279, Sept. 29, 2014]