A rotor-stator design consists of a rotating rotor and a stationary stator. The rotor creates a centrifugal force that directs the sample through a small opening in the stator. Shear force is created from turbulence, cavitation, and scissor action. The rotor runs at a high rpm to generate the maximum shear force. A rotor-stator is also described as a homogenizer. It best suited for low viscosity liquids. A homogenizer can emulsify two incompatible liquids. The breakdown of solid materials into a liquid media can be achieved with a rotor-stator. For the coating and ink industry, there are limits to the type of pigments that can be dispersed with a rotor-stator. Please consult with your BYK-Gardner representative when considering a rotor-stator for pigment dispersing.
The VMA-Getzmann Dispermat line has two rotor-stator designs- horizontal and vertical. The Dispermat AS has horizontal design homogenizer chamber. The system can be configured as a single pass or multiple pass system. Very fine droplets with a large surface area can be achieved. The “C” technology is available making it ideal for R&D applications. There is a selection from fine to coarse gap rotors.
A homogenizer accessory is available for the Dispermat vertical Laboratory disperser line. The rotor-stator can be ordered as an accessory to enhance the capability of a lab disperser. It is very easy to assemble the rotor-stator accessory. The rotor is attached to a motor shaft and the stator is secured in the same way as the shaft protection pipe. With the rotor-stator, the Dispermat can perform emulsifying, homogenizing, and high shear mixing. The homogenizer accessory is designed for 2 – 5-liter volumes.