AS PER IS: 310, 1203, 1448, IP: 60, 49, 50, ASTM: D5, D217, D637



  • Used to determine grade of bitumen.
  • The penetration tests determine consistency of bitumen for the purpose of grading.
  • Depth in units 1/10 of millimeter to which a standard needle having a standard weight will penetrate vertically in a duration of five seconds at a temperature of 25°C determines penetration for gradation.


General Description & Specifications: It consists of

  • A vertical pillar mounted on a base provided with leveling screws.
  • The head, together with dial plunger rod and cone (or needle) slides on a pillar and can be clamped at any desired height.
  • A rack and pinion and pointer assemble provides fine adjustment of needle or cone tip to sample.
  • It incorporates a clutch mechanism which makes reading of penetration and subsequent resetting a simple and accurate operation.
  • The dial is graduated in 400 1/10 and the millimeter subdivisions and the needle pointer against figures makes easy reading.
  • Supplied with a bitumen penetration needle, ring weight one each 50 gms, and two sample containers.
  • Supplied with transistorized timer and electro-magnet incorporated in the clutch mechanism to accurately control penetration time to exact five seconds.


Accessories: Penetration cone for empirical estimation of penetration of lubricating grease, petroleum jelly etc.


NOTE: Hand operated Bitumen Penetrometer also available.




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