Standard: IS: 1205
Specification: Used for the determination of the softening point of bituminous material. Softening point is that temperature at which the specimen under test becomes soft enough to allow steel ball of specific dimension to fall a required distance under test condition.
The apparatus consist of
Two steel balls each 9.5 mm in dia
Brass rings – two tapered of brass
Ball guide – two
Ring holder – one
Bath – Breakers of heat resistance glass, I.D.8.5 cms and depth 12 cm approx