The PowerMix includes two separate agitation systems within one mixer. A planetary blade revolves in combination with a separate high-speed dispersion blade. Both revolve on their own axis as well as on a common axis, and the speed of each can be varied independently of the other. This combination allows a user to fine tune the mixer to meet his specific process needs and the shear rates that are required to optimize his process. The PowerMix is used for high viscosity vacuum mixing and dispersion as well as the dispersion of minor liquid or powder ingredients into powder mixes. The PowerMix is available in many sizes from a ½-gal.laboratory unit, through a 750-gal. production model. The unit shown was designed for vacuum operation, included a special light in the vacuum hood, special charging ports, a wall scraper, elevated base and a flush-type discharge valve. — Charles Ross and Son Company, Hauppauge, N.Y.