Line of double planetary mixers now includes an agitator blade design for batching dry powder blends, wet granulations and other formulations. Interchangeable helical blades are available as options and allow the mixer to be utilized for viscous pastes and putty-like materials. The blades rotate on their own axes while orbiting the vessel on a common axis. Pictured is a 100-gallon model equipped with two identical rectangular stirrers with upward rake fingers. The blades can be fully raised for easy cleaning, while the portable mix can is removed from under the mixer and rolled into the discharging area.