1.1 This test method covers the determination of the flash point, by tag manual and automated closed testers, of liquids with a viscosity below 5.5?mm2/s (cSt) at 40?°C (104?°F), or below 9.5?mm2/s (cSt) at 25?°C (77?°F), and a flash point below 93?°C (200?°F). 1.1.1 For the closed-cup flash point of liquids with the following properties: a viscosity of 5.5?mm2/s (cSt) or more at 40?°C (104?°F); a viscosity of 9.5?mm2/s (cSt) or more at 25?°C (77?°F); a flash point of 93?°C (200?°F) or higher; a tendency to form a surface film under test conditions; or containing suspended solids, Test Method D93 can be used. 1.1.2 For cut-back asphalts refer to Test Methods D1310 and D3143. Note 1: The U.S. Department of Transportation (RSTA)2 and U.S. Department of Labor (OSHA) have established that liquids with a flash point under 37.8?°C (100?°F) are flammable as determined by this test method for those liquids that have a viscosity less than 5.5?mm2/s (cSt) at 40?°C (104?°F) or 9.5?mm2/s (cSt) or less at 25?°C (77?°F),