The PowerMix (photo) 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.