The dynamic viscosity, η, can be obtained by multiplying the kinematic viscosity, ν, by the density, ρ, of the liquid. Scopeġ.1 This test method specifies a procedure for the determination of the kinematic viscosity, ν, of liquid petroleum products, both transparent and opaque, by measuring the time for a volume of liquid to flow under gravity through a calibrated glass capillary viscometer. Thus, the accurate determination of viscosity is essential to many product specifications. In addition, the viscosity of many petroleum fuels is important for the estimation of optimum storage, handling, and operational conditions. Scaffolding, Shoring and Anchoring Systems Testingĥ.1 Many petroleum products, and some non-petroleum materials, are used as lubricants, and the correct operation of the equipment depends upon the appropriate viscosity of the liquid being used.

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The density of both the sphere and the liquid are needed to perform the viscosity calculation. Some common liquids you could try including water, honey, corn syrup, cooking oil, and milk.Ĭalculate the density of your chosen sphere. Try testing many different liquids with different flow rates to see how their viscosities differ.

The liquid must be clear enough to see the marble as it’s dropped through the liquid.

You can use a watch instead of a stopwatch, but your measurements will be more accurate with a stopwatch.

A graduated cylinder is a plastic container that has graded markings on the side that allow you to measure volume.

Make sure its diameter is no greater than half the diameter of the graduate cylinder so it can easily be dropped into the cylinder.

The sphere can be a small marble or steel ball.

X Research source This experiment has many steps, but when followed correctly, they will allow you to calculate the viscosity of any liquid. To calculate viscosity of a liquid, you will need a sphere, a graduated cylinder, a ruler, a stopwatch, the liquid in question, a scale, and a calculator. Gather the necessary materials for the experiment.

Viscosity testing