A mixing apparatus and system includes a hub, a plurality of blades, and a respective hinge for each blade to pivotally secure each blade to the hub. Each hinge including a lock having a tab and a detent to secure the respective blade in an operating conformation.

A mixing bucket stabilizing assembly includes a base that has a top side, a bottom side and a perimeter edge extending between the top and bottom sides. A bracket is attached to the top side of the base. The bracket releasably engages a mixing bucket. A plurality of legs is attached to and extends downwardly from the bottom side. A frame is attached to and extends upwardly from the base. The frame has a central aperture extending therethrough. The central aperture is aligned with the bracket and extends around the mixing bucket. The mixing bucket is frictionally engaged by the bracket to retain the mixing bucket on the base while material within the mixing bucket is mixed.

A fluid holding structure fluid circulating system includes a fluid movement assembly for urging fluid upwardly towards a surface of the fluid holding structure. The fluid movement assembly includes a frame that is positionable on a floor of a fluid holding structure. The frame includes a lower section and an upper section. A motor is mounted to the upper section of the frame and a propeller is mounted on the motor such that the propeller is above the frame. The propeller urges fluid upwardly away from the frame when the motor is turned on to rotate the propeller.

A mixer assembly, for mixing an injection medium with the exhaust gas of an internal combustion engine, including an exhaust gas guide portion having a first threaded hole pattern and an injector attachable to the exhaust gas guide portion and having a mounting hole pattern. The first threaded hole pattern is complementary to the mounting hole pattern. The exhaust gas guide portion has a second threaded hole pattern. The second threaded hole pattern is complementary to the mounting hole pattern.

A mixer assembly, for mixing an injection medium with the exhaust gas of an internal combustion engine, including an exhaust gas guide portion having a first threaded hole pattern and an injector attachable to the exhaust gas guide portion and having a mounting hole pattern. The first threaded hole pattern is complementary to the mounting hole pattern. The exhaust gas guide portion has a second threaded hole pattern. The second threaded hole pattern is complementary to the mounting hole pattern.

A bucket holding and tipping device with an adjustably movable cinching band on which are engaged one or more foot plates. On each plate, the band passes through slots in the plates and the plates are adapted to receive in pressing relationship the bottom of a human foot. Each plate also has a handle opening in the plate.

An agitation device for agitating products held in wells of sample vessels or a laboratory microplate is disclosed. The device is arranged to retain a microplate and to agitate an agitation member comprising an array of agitation projections which enter the wells of the microplate. The agitating motion can be horizontal and damping means can be provided between an actuator and parts of the device to reduce overall vibrations. A related method of agitation of microplate or sample vessel contents is described. A novel arrangement for receiving a replaceable agitation member for the device is also disclosed.

A bag for mixing fluid volumes includes a port at a center of a first end, a second end, a first constriction, and a second constriction. The port is configured to couple to at least one fluid line for introducing and removing fluids from the bag. The second end includes a first lobe and a second lobe. The first constriction is on the first side between the first end and the second end and the second constriction is on a second side between the first end and the second end.

A bag for mixing fluid volumes includes a port at a center of a first end, a second end, a first constriction, and a second constriction. The port is configured to couple to at least one fluid line for introducing and removing fluids from the bag. The second end includes a first lobe and a second lobe. The first constriction is on the first side between the first end and the second end and the second constriction is on a second side between the first end and the second end.

A mixing assembly includes a mixer having a mixer housing, a mixing element having a first and second ends, first and second entry openings arranged at the first end and an outlet opening arranged at the second end of the mixer, a cartridge including a head part having first and second outlet openings, a connection device to connect the mixer to the head part of the cartridge such that the first and second outlet openings of the cartridge align with the inlet first and second openings of the mixer, the connection device configured as a bayonet connection, and an alignment element to align the mixer relative to the head part, the alignment element comprising an alignment projection and a corresponding alignment recess to engage with one another.