I am carrying an experiment where I will be measuring the viscosity of honey using Zahn cup but I don't know what is the optimal and efficient size and the size of the opening to purchase if you can please help me? Thank you for your co-operation.


It depends on the viscosity of your honey, many honeys are too high viscosity for a typical Zahn test.

average honey has a viscosity of about 2000 centistokes and the biggest zahn cup, number 5 goes up to 1800 centistokes @ 80 seconds, if you buy cup number 5, you may find a few will go through it, so you have to find a higher viscosity method.

quote: When measured at 25 deg C viscosity of honey samples came within the range from 18169 to 2560 cP

there are lists of viscosity tests like dropping a sphere of a specific weight & density and see the time it takes the sphere to reach designated junctures or something.

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  • $\begingroup$ Oh ok but the problem with using a sphere moving inside the honey is that it is not efficient because so much honey is required $\endgroup$ – Mo Kamal May 4 at 13:21
  • $\begingroup$ I am using European forests kinds of honey and city kinds of honey, would that work with Zahn cup? $\endgroup$ – Mo Kamal May 4 at 13:24
  • $\begingroup$ So you don't have an answer to my question? $\endgroup$ – Mo Kamal May 4 at 20:43
  • $\begingroup$ Essentially Zahn cup no.5 can officially measure some but not all honeys, because honeys can go up to 18000 Cp, so the answer is that Zahn method isn't very suitable for honey. for a low budget a sphere method uses the same as a Zahn, perhaps small glass marbles are best. markedbyteachers.com/gcse/science/… and google.com/… $\endgroup$ – aliential May 4 at 23:49
  • $\begingroup$ depends on what accuracy you are going for, for a smaller budget, the answer is less scientifically accurate. the answer is that the tools depend on your budget and your access to lab equipment. $\endgroup$ – aliential May 4 at 23:57

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