Charles Ross and Son Co.: Dual-shaft mixers are offered with an anchor and a high-speed disperser. Each agitator is independently driven by an inverter-duty, explosion-proof motor for variable-speed operation. Stocked in 2-, 10-, 50-, 100- and 200-gallon sizes, units include 304 stainless steel wetted parts, vacuum construction, and air/oil hydraulic lifts to raise and lower the agitators. Available options include thermocouples, jackets for heating or cooling and a variety of discharge valves.