For more than 75 years Norcross has been providing viscometers, viscosity and pH control expertise from the viscosity cups to integrated viscosity control systems for complete process control. Norcross viscometers measure fluid viscosity as a function of the time required for a piston to fall a fixed distance, displacing fluid from a cylinder. Because Norcross viscometers are not affected by flow, turbulence, or level fluctuations, and also because they do not affect the temperature of the fluid that they are measuring, Norcross viscometers can be immersed in vessels or directly in process streams.