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Neminath Instruments

Cannon Fenske Direct Flow Viscometer

Cannon-Fenske direct flow viscometer measures viscosity by timing liquid flow under gravity through a capillary, ideal for transparent Newtonian fluids.

Cannon Fenske Direct Flow Viscometer

Cannon Fenske Direct Flow Viscometer as per BS/IP/CF and Astm D446 - Calibrated

The Cannon-Fenske Direct Flow Viscometer (also known as Cannon-Fenske Routine Viscometer) is a type of glass capillary viscometer used for accurately measuring the kinematic viscosity of transparent Newtonian liquids. It operates based on the principle of measuring the time it takes for a fixed volume of liquid to flow through a precisely calibrated capillary tube under gravity.It is majorly used in chemical and petroleum industries, to determine viscosity of a sample at different temperatures. 

  • Suitable for measuring transparent liquids 
  • Material : Borosilicate Glass.
  • Supplied with Certificate of Calibration @40°C / 100°C with Viscometer Constant. 
  • Confirming Standards : Astm D445, Astm D446, ISO 3104 and ISO 3105.
  • Nominal Overall length = 250mm, sample volume  = 7-15 ml 
  • Suitable for measuring low to high Viscosity liquids.Part 
Part No Size Nominal Constant

Viscosity range as per BS/IP/CF

 Viscosity range as per Astm D446
NI/DF/01 25 0.002 0.4 - 1.6 Cst  0.5 - 2 Cst 
NI/DF/02 50 0.004 0.8 - 3.2 Cst  0.8 - 4 Cst 
NI/DF/03 75 0.008 NIL 1.6 - 8 Cst 
NI/DF/04 100 0.015 3 - 12 Cst  3 - 15 Cst
NI/DF/05 150 0.035 7 - 28 Cst  7 - 35 Cst
NI/DF/06 200 0.1 20 - 80 Cst 20 - 100 Cst
NI/DF/07 300 0.25 50 - 200 Cst 50 - 250 Cst
NI/DF/08 350 0.5 100 - 400 Cst  100 - 500 Cst
NI/DF/09 400 1.2 240 - 960 Cst 240 - 1200 Cst
NI/DF/10 450 2.5 500 - 2000 Cst  500 - 2500 Cst 
NI/DF/11 500 8 1600 - 6400 Cst  1600 - 8000 Cst 
NI/DF/12 600 20 4000 - 16000 Cst  4000 - 20000 Cst 

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