Determines Tag Open-Cup flash and fire points of liquids at temperatures of up to 325°F (163°C) and flash points of cutback asphalts at temperatures of less than 200°F (93°C). Includes sample test cup, plated brass liquid bath with constant level overflow, pivoting ignition taper with pilot light and reference bead, pivoting thermometer holder, heater and cast aluminum base. Electrically heated model is equipped with stepless variable heat control for accurate control of temperature rate of rise per specifications. Also available with gas or burner. Conforms to: ASTM D1310, D3143.