Ball and Ring Method
n System of testing the melting and softening temperatures of asphalt, waxes, resins, and paraffins. A ring 15.875 mm in diameter is filled with the substance to be tested, and a steel ball 9.5 mm in diameter is placed upon the substance in the ring. The end point is the temperature at which the substance softens sufficiently to allow the ball to fall through the ring to the bottom of the beaker. See also Softening Point. (Paint: pigment, drying oils, polymers, resins, naval stores, cellulosics esters, and ink vehicles, vol. 3. (2001) American Society for Testing and Material; Usmani AM (ed) (1997) Asphalt science and technology. Marcel Dekker).