He ChemGrout CG-620 Colloidal Mixer is a skid mounted system. The colloidal mixer is equipped with a high speed centrifugal diffuser-type pump that disperses the cementitious material down to its smallest size to achieve complete particle wetting (or wetness) and a powered bridge breaker to precondition material before entering the colloidal mixing pump. The rugged steel frame stands up to the toughest conditions on the job site. Operator controls are centrally located for efficient production. All components are easily accessible for operating, cleaning and maintenance. The ChemGrout CG-620/630 Colloidal Mixers are designed to be add on units to complement equipment that is already owned by the user.