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Softening Point App. / Ring and Ball Apparatus – Manual UNILAB-035RBA: Also called as Ring & Ball Apparatus. This apparatus is meant for determination of softening point of bituminous materials according. Softening point is that temperature at which the specimen under test becomes soft enough to allow a steel ball of specific dimension to fall a required distance under test condition.
Hand Operated – The apparatus consists of Glass beaker of heat resistant glass having internal diameter of 8.5 cm X 12 cm depth (approximately), two steel balls each of 9.