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PTB 311E 3-IN-1 Hardness, Diameter and Thickness Testing Instrument

The PTB 311E is the only tablet testing instrument worldwide, which is capable of measuring thickness (height), diameter (length) and hardness of a sample without the need of any additional tools are change-over parts. To assist the user during the thickness testing stage, different jaws to help keep the sample in a vertical position are available. For the hardness and diameter tests the standard jaw size 2, which is supplied in the standard delivery scope is sufficient for all tablets with a thickness from 8 to 12mm.


  • Fully USP <1217> and EP <2.9.8> compliant
  • 300, 500 and 800N max. hardness range models available
  • Test thickness, diameter and hardness of a tablet
  • Dual force mode instrument with linear speed increase and linear force increase modes
  • Multiple point validation procedure for all three stations built-in
  • Programmable print-out of force increase curve
  • Set to test tension strength of oblongs and caplets available