Record the time required for the cup to empty, stopping the watch when the stream breaks.Ĥ. Lift the cup vertically out of the fluid, starting the stop-watch as the cup breaks the surface.ģ. thoroughly stirred and at the normal operating temperature.Ģ. The sample must be representative of the actual material to be tested, i.e. Submerge the cup in the fluid for approximately 30 seconds to allow the cup to come to sample temperature.
Viscosity cup how to#
How to Measure Viscosity with The Shell Cup?ġ. The measured kinematic viscosity is generally expressed in seconds (s) flow time, which can be converted to Centistokes (cSt). The cup is first dipped into the product to be measured, then empties through the orifice. To determine viscosity, dip the cup in a liquid until it is completely filled, lift the cup out of the liquid, and time how many seconds it takes for the liquid to drain out of the hole in the bottom. These stainless steel cups designed for quick viscosity measurements on-site or during production. Also known as Zahn cups, these testers let you calculate viscosity based on the speed at which a liquid drains through a cup with a hole at the bottom. Find more information when you jump to our viscosity cup reference chart. The viscosity is determined by the time it takes for the cup to empty with a steady flow. As the name implies, dip cups are to be dipped into the substance being tested.
Superior to the Zahn Viscosity cup because of their sensitivity and because they do not "dribble", Shell Viscosity Cups are available in six different ranges for measurements between cSt. Dip cups are ideal for testing paints varnishes and similar products. The SHELL VISCOSITY CUPS are a simple, reliable device for measuring the viscosity of a wide range of fluids. Viscosity measurement is the most sensitive control method of printing variables which affect the quality of your finished product, and is a determining factor in final print consistency. Learn how to measure viscosity with Flow Cups. A change of viscosity indicates variations in pigment concentration or percentages of solids, and can show the degree of polymerization of UV-cured ink or coating. It is the measurement of a fluid's internal friction, or its resistance to flow, under varying degrees of stress, stress rates and temperatures. The readings obtained do not directly correspond with any other viscosity scale.Viscosity is the measurement of an ink or coating's actual performance on the press. The instrument used throughout the industry since 1934 is called a Viscosity Cup or Stein-Hall Cup. Record the time and temperature of adhesive.The time in seconds is the Stein-Hall viscosity.Fill the viscosity cup with strained adhesive and with a stopwatch measure the time it takes for the level in the cup to drop from the upper pin to the lower pin.Continue until the time is 15 seconds (+/- 1 second). Also known as Zahn cups, these testers let you calculate viscosity based on the speed at which a liquid drains through a cup with a hole at the bottom. If it is shorter than that, bend the pins apart and check the calibration again. If it is longer than that, bend the pins together and check the calibration again. The time should be 15 seconds (+/- 1 second). Distributor / Channel Partner of Viscometer & Viscosity cups - Ford Cup / B4 Viscosity Cup With Stand, Penetrometer, Afnor Cup and Ford Cup offered by.Remove your finger and, with a stopwatch, measure the time it takes for the level in the cup to drop from the upper pin to the lower pin.Place finger over the orifice of the viscosity cup.Check the orifice to make sure it is not plugged, corroded or worn. The Stein hall cup must be calibrated before performing the test.