Ford viscosity cup is a simple gravity device that permits the timed flow of a known volume of liquid passing through an orifice located at the bottom.
Under ideal conditions, this rate of flow would be proportional to the kinematic viscosity (expressed in stokes and centistokes) that is dependent upon the specific gravity of the draining liquid.However, the conditions in a simple flow cup are seldom ideal for making true measurements of viscosity.
It is important when using a Ford Cup and when retesting liquids that the temperature of the cup and the liquid is maintained, as ambient temperature makes a significant difference to viscosity and thus flow rate.
These new Ford viscosity cups are extremely easy to use. Simply pour your sample into the cup and measure the time it takes for the liquid to flow through the orifice until the first break in the liquid stream. Use the included table to convert the elapsed time to centistokes (cSt).
The cups are made from solid SS; the orifice is made from SS All the cups are calibrated to NIST-traceable oils.
An accessory kit, a stand, and a stand with water bath ports are sold separately.