"When we decided to increase our capacity we specified a Munson Model 700 stainless steel rotary batch mixer with a 140 cu ft (3.96 cu m) capacity. It accommodates our batch weights of 5500 lb (2,500 kg), in excess of what a cone blender can handle. Because the drum rotates on external trunnion rings, there is no internal shaft with seals immersed in the material, eliminating a maintenance and cross-contamination problem. In addition, the mixer evacuates upon discharge with little or no residual, allowing rapid, thorough cleaning."