Methods and apparatus are adapted to wash magnetic particles isolated in a vessel. The methods include providing a vessel with wash liquid and a layer of magnetic particles, providing a probe having aspiration capability, positioning a probe tip above the layer of magnetic particles, aspirating at least some of the wash liquid above the layer, positioning the probe tip below the layer, and aspirating at least some of the wash liquid from below the layer of magnetic particles. The suction may be turned off as the probe tip descends past the layer. A novel magnetic particle washing apparatus are disclosed.

Disclosed herein are cell processing systems, devices, and methods thereof. A system for cell processing may comprise a plurality of instruments each independently configured to perform one or more cell processing operations upon a cartridge, and a robot capable of moving the cartridge between each of the plurality of instruments.

Disclosed herein are cell processing systems, devices, and methods thereof. A system for cell processing may comprise a plurality of instruments each independently configured to perform one or more cell processing operations upon a cartridge, and a robot capable of moving the cartridge between each of the plurality of instruments.

Disclosed herein are cell processing systems, devices, and methods thereof. A system for cell processing may comprise a plurality of instruments each independently configured to perform one or more cell processing operations upon a cartridge, and a robot capable of moving the cartridge between each of the plurality of instruments.

Rotational speed of a spray arm is regulated based on centrifugal force and a liquid jet to create a variable angle corner spray nozzle. The regulator includes a weight on a pivot and a fluid jet, the weight having a curved surface to produce a variable angle corner spray nozzle depending on the weight angle. Centrifugal force created during rotation pushes the weight outward, which increases as the spray arm rotation speed increases. The liquid jet is located out from a pivot point and tends to push the weight inward. The pushing force of the liquid jet is maximum when the weight is most inward and minimum when the weight is most outward. The regulator stabilizes the arm speed at a specific speed independent from center pivot friction and the spray arm nozzle's orientation tolerance. Speed stabilizes when centrifugal force on the weight is equal to the pushing force of the fluid jet.

Disclosed herein are cell processing systems, devices, and methods thereof. A system for cell processing may comprise a plurality of instruments each independently configured to perform one or more cell processing operations upon a cartridge, and a robot capable of moving the cartridge between each of the plurality of instruments.

Disclosed herein are cell processing systems, devices, and methods thereof. A system for cell processing may comprise a plurality of instruments each independently configured to perform one or more cell processing operations upon a cartridge, and a robot capable of moving the cartridge between each of the plurality of instruments.

Disclosed herein are cell processing systems, devices, and methods thereof. A system for cell processing may comprise a plurality of instruments each independently configured to perform one or more cell processing operations upon a cartridge, and a robot capable of moving the cartridge between each of the plurality of instruments.

Disclosed herein are cell processing systems, devices, and methods thereof. A system for cell processing may comprise a plurality of instruments each independently configured to perform one or more cell processing operations upon a cartridge, and a robot capable of moving the cartridge between each of the plurality of instruments.

Aspects of the present disclosure are directed to a device for carrying out heterogeneous immunoassays by means of magnetic particles in cuvettes lined up next to one another, wherein each cuvette has a filling opening and at least one lateral measurement window which is transparent to the measurement radiation. In one embodiment, the device includes at least one stationary cuvette array in which the cuvettes are arranged for receiving liquid media, at least one support arm which is movable along the cuvette array and which is lowerable toward the filling opening of a selected cuvette. The support arm having at least one aspirating needle which is lowerable toward the bottom of the cuvette, and also having at least one dispenser which can be positioned above or in the respective filling opening for dispensing the liquid media into the cuvette.