Rotor Stator is a single shaft mixer with an impeller rotating in close proximity to a stationary housing. It is used to rapidly break apart solid particles in a liquid or emulsify liquids into liquids. The rotor imparts high shear forces to the ingredients mechanically. Clumps of particles are also broken apart by the hydraulic shearing forces generated as they are ejected through openings in the stator into the rest of the batch. It is particularly effective at chopping coarse particles such as rubber or flake resin.