The Ross PowerMix Planetary Disperser (US Patent No. 4,697,929) is designed for efficient heavy-duty mixing of viscous pastes and highly-filled dispersions. Equipped with a high speed saw-tooth blade and a planetary stirrer, the PowerMix can quickly incorporate large amounts of powders into a thick or sticky starting liquid. At the same time, the thorough folding action of the planetary stirrer and the chopping motion of the high speed blade allows the PowerMix to handle dry powder blends and gr...