Successful test methods will deliver a % torque reading between 10 and 100. When developing a new test method, trial and error is often necessary in order to determine the proper spindle and speeds. In the case of non-Newtonian fluids, Brookfield viscosities measured under the same conditions (model, spindle, speed, temperature, time of test, container, and any other sample preparation procedures that may affect the behavior of the fluid) can be compared. The amount of viscous drag is proportional to the amount of torque required to rotate the spindle, and thus to the viscosity of a Newtonian fluid.

Torque is applied through a calibrated spring to a disk or bob spindle immersed in test fluid and the spring deflection measures the viscous drag of the fluid against the spindle. Principle of operation Ĭlassical Brookfield viscometers employ the principle of rotational viscometry - the torque required to turn an object, such as a spindle, in a fluid indicates the viscosity of the fluid. All manufacturing is located in the US at company headquarters. It has been ISO certified since the 1990s.īrookfield Engineering has dealers in 60 countries and regional offices in the US, UK, Germany, India and China. Brookfield Engineering was a family-run business until 1986, when it became an ESOP company. The company was established in 1934 by Don Brookfield Sr., who graduated from MIT with a degree in electrochemical engineering. These instruments are used by research, design, and process control departments. Its product line includes laboratory viscometers, rheometers, texture analyzers, and powder flow testers as well as in-line process instrumentation. It is a subsidiary of the conglomerate Ametek.

Brookfield Engineering is an engineering and manufacturing company with headquarters in Middleboro, Massachusetts.

Brookfield viscosity test