Subject

Softening point of bitumen, bituminous binders, hot coatings, tar, tall oil rosins, waxes, polymeric resins.

Measuring Ring-and-Ball Principle

The sample is heated in a liquid bath respecting the heating rate prescribed by the standards test methods. During this procedure the product gradually become softer and when the test ball fall a distance of 25 mm the softening point is determined.

Measuring Ring-and-Ball Devices

• Testing unit equipped with 2 steel balls, 9.5 mm diameter, 3.5 gr
• Mechanical ring holder and assembly, made of brass, support for 2 test rings, centering guide
• Heating plate
• Heat resistant glass Beaker, 800 ml capacity
• Automatic falling ball detection system by video camera