planetary mixers charles ross son companyRoss double planetary mixers come with an agitator blade with 2 identical rectangular stirrers with upward rake fingers. Designed to rotate on their own axes while orbiting the vessel on a common axis, the blades batch dry powder blends, wet granulations and similar formulations; optional interchangeable helical blades allow the mixer to be used for viscous pastes and putty-like materials. 
Charles Ross & Son Company; 800-243-ROSS;