Falling Ball Viscometer

Falling Ball Viscometer



The Hoppler principle is used to measure the viscosity of Newtonian liquid by measuring the time required for a ball to fall under gravity through a sample-filled tube that is inclined at an angle.

The average time of three tests is taken; the result is converted into a viscosity value using a simple formula.

Two models are available:
KF30 has a fixed angle of 80° and complies with DIN 53015
KF40 can be angled at 50°, 60°, 70° and 80°.

Falling Ball Viscometer


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Product Description


Features And Benifites:

  • Pivot bearing allows for quick and easy tube rotation – ideal for repeat tests
  • Connection to circulating bath for temperature control of sample
  • Set of six balls to test a wide variety of samples
  • Complete with temperature probe
  • Accuracy 0.5% to 2.0% depending on ball being used

Specifications : 

Falling Ball Specifications
Viscosity Range : o.5 mPa.s(cP)to 70,000 mPa.s(cP)
Accuracy : 0.5 %-2.0% depending on choice of ball
Bell Set Material Of Construction : Balls 1 and 2 : Baron  Silicate Glass Balls 3 and 4 : Nickel-Iron Balls 5 and 6 Steel
Ball Diameter 11.0mm to 15.81mm
Fall Time Of Ball In Measurement 30 to 300 Seconds**
Length of Measurement Zone in the Tube 100mm
Operating Temperature Range : -60°C  to  +150°C
Sample Tube Volume : 40mL
Viscometer Dimensions 180 X 220 X 330 m


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