The readings obtained do not directly correspond with any other viscosity scale. The instrument used throughout the industry since 1934 is called a Viscosity Cup or Stein-Hall Cup.
Viscosity measurements are made in conjunction with product quality and efficiency. Brookfield deals with liquids and semi-solids. Viscosity is a principal parameter when any flow measurements of fluids, such as liquids, semi-solids, gases and even solids are made. 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. Find Viscosity-related information at AMETEK Brookfield Customer Learning Center.Continue until the time is 15 seconds (+/- 1 second). 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).Test Method D 445 describes the basics and background for this measurement. 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. 3.1 The viscosity of silicone fluids is typically measured by kinematic viscosity.In this test, we apply a range of shear rates to the sample and measure viscosity throughout. Place finger over the orifice of the viscosity cup. Viscosity/shear rate or shear stress/shear rate profiles, often termed rheograms, are a great way of understanding product behaviour under forced-flow conditions such as in pumping, mixing or filling processes.Check the orifice to make sure it is not plugged, corroded or worn.
The Stein hall cup must be calibrated before performing the test.
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