Boekel Zahn Cup Viscometer Calculator

Calculate the viscosity from a Boekel Zahn Cup Viscosimeter using the cup size and efflux time.

Zahn Cup Size      Efflux Time seconds

Kinematic Viscosity cSt
Zahn cups can be used to quickly measure the viscosity of liquids such as paint, lacquer, varnish, syrup and oil. Boekel cup type viscometers measure viscosity in the 18 to 1725 centistokes range in 90 seconds or less.

The viscosity is measured by determining the amount of time it takes for a steady stream of sample to flow from the orifice in the bottom of the cup. This is correlated to the viscosity in centistokes. All measurements should be made at 77 F (25 C).

Cup Capacity - 44ml
Cup #1
Cup #2
Cup #3
Cup #4
Cup #5
Model No. 27134
-001
-002
-003
-004
-005
Orifice Diameter (in)
0.078"
0.108"
0.148"
0.168"
0.208"
Zahn Range (sec)
45-80
25-80
20-75
20-80
20-75
Centistoke Range
18-56
40-230
150-790
220-1100
460-1725+
Applications
Very Thin Oil
Thin Oil or
Lacquer
Medium Oil or
Mixed Paints
Heavy Mixtures
Very Heavy
Mixtures

See ASTM #D 4212: Viscosity by dip-type viscosity cups.

Debut: October 25, 2003. Revision No. 2. Monday, January 2, 2006. Visitors:

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