CENTRIFUGES, REFRIGERATED CENTRIFUGES, CENTRIFUGE ROTORS, CONTINUOUS FLOW CENTRIFUGE SYSTEMS, AUTOMATIC SAFETY VALVES FOR CONTINUOUS FLOW CENTRIFUGE SYSTEMS, SAFETY ENCLOSURES FOR CENTRIFUGES, AMMETERS FOR CENTRIFUGES, MOTOR DRIVEN LABORATORY MIXERS, CHAMBERS FOR LABORATORY MIXERS, ROTOR-KNIFE BLADE ASSEMBLIES FOR LABORATORY MIXERS, COVERS FOR LABORATORY MIXERS, STAINLESS STEEL TUBES FOR LABORATORY MIXERS, STAINLESS STEEL KNIVES FOR LABORATORY MIXERS, ADAPTOR RINGS FOR LABORATORY MIXERS, ADAP...