Disposable reciprocating bag mixing systems

A (disposable) single-use closed mixing system consisting of a mixing impeller(s) on a shaft, the shaft being sealed to the top of the bag. The flexible bag is used as the reciprocating membrane. Bag sizes 1 to 10,000 liters, can be gamma sterilized or non-sterile. The bags can be round or square in shape. All components including the impeller, shaft and accessories are CLASS VI material. The impeller or impellers used for large bags can be round, or square with holes, flutes, fins, tubing or a combination of these to meet specific mixing requirements. A detachable electric or air powered actuator provides the reciprocating action. The impeller shaft is sealed to the bag eliminating the need for rotary seals. Disposal of the mixing system is environmentally friendly.