[Fmeub]

I did an experiment with an Oswaldt viscometer where the flow rate of a polimer solution is measured.

I was wondering whether the amount of liquid that I used for each experiment would make a big difference on the results. My gutt feeling would be that the viscosity is not dependent on the volume, for example, a drop of syrup is still as "sticky" as a jar full of syrup. However the concentration must remain the same.

The following equation confused me:
V/t = ((p_i² - (p_u²) *pi*r⁴)/(16 * l *p₀* n)

where pi is the greek letter, and n is the greek eta.
V volume of liquid in the tube.
t time
p_i inlet pressure
p_u outlet pressure
p₀ measured pressure
r radius of tube
l length of tube
n viscosity coeffiecient

From the above equation it seems as if the viscosity coefficient is dependent on the volume.

[Borek]

Volume that passed viscometer, not volume used.

[Fmeub]

Thanks!