The Softening Point Apparatus is a ring and ball method apparatus used to determine the softening point of asphalts, pitches, tars and most resins. The softening point is the degree of temperature at which a solid substance starts to convert into a liquid state under certain specific conditions.
One of the most common ways to determine a softening point is through the use of a ring-and-ball apparatus.
During this test, steel balls are placed on top of bitumen disks within a bath.
As the temperature of the bath rises, the samples soften and are unable to hold the balls.
The temperature at which the balls drop 25mm (1 inch) is then recorded.
800ml beaker with brass, double set-up fixture with cover and thermometer port with stopper, 2 shouldered rings, 2 ball centering guides and 2 standard balls. Order required thermometer separately.