Softening Point Ring and Ball Apparatus

Model: LP-16
Price: $102.00

LP-16 Softening Point Ring and Ball Apparatus determine the softening point of asphalt, coal tar pitch and other viscoelastic bitumens in the range of 30°—157°C (86°—315°F). The unit simultaneously tests two samples for optimal compliance with standard test procedures.  Steel balls are placed on top of bitumen specimen disks in test rings in a bath. The temperature of the bath is increased gradually until the specimens soften and fall under the ball weight to the shelf 1in (25.4mm) below.

The LP-16 Apparatus includes two square-shouldered brass test rings, two 3/8in (9.5mm) steel balls, two brass ball-centering guide rings, an 800ml heat-resistant beaker (bath), and a brass ring holder suspension assembly with cover and shelf to fit the beaker.


  • Determines to soften point of asphalt, coal tar pitch and viscoelastic bitumen from 30°—157°C (86°—315°F)
  • Tests two samples simultaneously for proficiency and optimal compliance with test procedures

Included Items:

  • Softening Point Ring and Ball Apparatus
  • Two square-shouldered brass test rings
  • Two 3/8in (9.5mm) steel balls
  • Two brass ball-centering guide rings
  • 800ml heat-resistant beaker
  • Brass ring holder suspension assembly with cover and shelf


Estimated Shipping Weight 2.0lb (0.91kg)

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Estimated Shipping Weight 2.0lb (0.91kg)
Meets Standard(s):
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