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Ring & Ball Apparatus (Softening Point)
The Ring and Ball Apparatus is used to determine the softening point of bitumen — the temperature at which the material softens sufficiently to allow a standard steel ball, resting on a bitumen-filled ring, to sink through a specified distance under the ball's own weight as the sample is heated at a controlled rate in a water or glycerine bath. The softening point is an important indicator of a bitumen grade's temperature susceptibility and suitability for a given climate/application. Each equipment is supplied with a bath of heat resistant glass and Tapered Rings-2 Nos.,Ball Centering Guide-2 Nos,Steel Balls of 9.5 mm dia-2 Nos,Ring holder-1 No,Electric Heater (Hot Plate)-1 No.
Thermometer IP 60C,Range: -2° C to 80° C
Thermometer IP 61C, Range: 30° C to 200° C
| Standard Conformity | IS 1205 |
| Components | Brass rings (2 nos.), steel balls (9.5 mm, 3.5 g), support frame, bath |
| Heating Medium | Distilled water or glycerine (temperature range dependent) |
| Heating Rate | 5°C per minute (standard) |
| Application | Softening point determination of bitumen |
