A vessel configured to contain a liquid is provided. The vessel includes a collapsible bad, a reusable support structure, a sensor, and a controller. The collapsible bag is operative to contain the liquid. The reusable support structure is operative to support the collapsible bag. The sensor is operative to measure a parameter within the collapsible bag. The controller is in electronic communication with the sensor and operative to introduce an antifoaming agent into the collapsible bag based at least in part on a signal received from the sensor.

A vessel for culturing cells is provided that includes a vessel body having a top portion, a bottom portion comprising a bottom interior surface, and a cylindrical sidewall. The vessel additionally has an impeller assembly inside the vessel body having a top portion rotatably coupled to the top portion of the vessel body, the impeller assembly having a plurality of planar blades, a central axis, a flexible shaft extending down from the top portion of the impeller assembly, a magnet receptacle molded within the plurality of planar blades, a magnet within the magnet receptacle, and an impeller o-ring coupled to a bottom surface of the planar blades. The vessel also includes a plurality of positioning nubs coupled to the bottom interior surface of the vessel body, spaced from an inside edge of the impeller o-ring.

The system and method of the invention pertains to an axial flux stator is implemented to replace the drive-end magnets and the drive motor. The axial flux stator comprises a control circuit to control the voltage and current provided to the stator, to measure the torque and speed of rotation, and to measure the magnetic flux and magnetic flux density produced by the axial flux stator and impeller magnets, individually or in combination. The axial flux stator comprises a plurality of current carrying elements to produce magnetic flux in an axial direction and drive the impeller.

According to various implementations, the bioreactor system includes a bioreactor vessel, an impeller for stirring contents within the vessel, a temperature control source for controlling the temperature of the contents of the vessel, an aeration system for supplying air to the vessel, and one or more data loggers. According to certain implementations, the impeller is a novel impeller design that spins more smoothly and rapidly than known impellers. In addition, the bioreactor system is modular, durable, and relatively inexpensive compared to existing bioreactor systems, which allows for bench-scale implementation, use with differently sized bioreactor vessels, and accessibility to more educational programs, according to some implementations.

A bioprocess mixer (1), which comprises: a support vessel (2) with at least one side wall (3, 4, 5, 6) and a bottom wall (7), where the walls define a support vessel inner volume (8), and at least a first (9) and a second (10) magnetic impeller drive unit; and a flexible bag (11, 111) adapted to fit inside the support vessel inner volume, where the bag has at least one bag side wall (12, 112, 13, 113, 14, 15), a bag bottom wall (16, 116) and a bag top wall (17, 117) defining a bag inner volume (18), and at least a first (19) and a second (20) magnetic impeller rotatably attached to a bag wall in the bag inner volume.

A device for frothing milk preferably includes a rotatable impeller and a screen disposed about the bottom of the impeller downstream of milk being pushed by the impeller. The frothing device may further include a pitcher and a base upon which the pitcher sits wherein the base includes a heater. The pitcher includes a magnetic drive capable of turning the impeller at very high speeds. The impeller is positioned off-center within the pitcher that preferably includes a tapered interior. The structure of the device and programs that adjust the speed of rotation of the impeller permit the user to create bubbles and further break the bubbles down into a silky smooth microfoam without the conventional use of a steam wand or other such device and without the skills of a professional barista.

A bioreactor configured to contain a volume of liquid is provided. The bioreactor includes a collapsible bag able to contain the volume of liquid, a support structure surrounding and containing the collapsible bag, a first sparger connected to the collapsible bag, the first sparger having a first aperture size, and a second sparger connected to the collapsible bag, the second sparger having a second aperture size that is different from the first aperture size.

A mixing vessel for accommodating components to be mixed has a container with at least one mounting depression in a side wall of the container. The mounting depression is adapted so that a mixing impeller housing of a mixing impeller is at least partly insertable, in which at least one magnet is housed for being magnetically connectable to a drive device to be driven. A locking assembly is attachable to the mounting depression from outside for locking the mixing impeller in a storage position, in which the mixing impeller is not rotatable. The locking assembly has a magnetically active element that is adapted to interact with the magnet of the mixing impeller.

A machine (1) for homogenising a food substance has: a container (10) with a side wall (11) and a bottom wall (12) delimiting a cavity (10); an impeller (30) with an impelling member (31) forming an impelling surface (31,31,31) that is drivable in rotation (r) about a central axial direction (30) of the impelling surface (31,31,31) for imparting a mechanical effect to the food substance; and a module (20) which has a housing means (22) that contains an inner chamber (22,22a) and that delimits a seat (21) for the container (10), the chamber (22,22a) containing an electric motor (24). The electric motor (24) has an output drive axis (24) with a driver device (24) configured to drive a follower device (35) of the impeller (30). The driver device (24) and the follower device (35) are magnetically coupled through a sidewall (11) and/or bottom wall (12) of the container (10). The driver device (24) comprises a ferromagnetic or magnetic field-generating element (24a) that is arranged to be magnetically coupled to a corresponding ferromagnetic or magnetic field-generating element (36) of the follower device (35). The follower device (35) extends over a predominant part of the bottom wall (12) of the container (10) or across a substantial part of the wall (12) along a diameter thereof. The driver device (24) extends over a predominant part of a bottom part of the seat (21) or across a substantial part of the bottom part of the seat (21) along a diameter thereof. The ferromagnetic and magnetic field generating elements (24a,36) are positioned at extremal or peripheral parts of the follower device (35) and of the driver device (24).

Disclosed are a system for pretreatment of sample and a method for controlling the same. The system for pretreatment of sample, including: a holder storage unit having a module holder on which a sample pretreatment module is seated; a cartridge accommodating portion for loading a cartridge therein, wherein the sample accommodated in a chamber of the sample pretreatment module is discharged and loaded into the cartridge; a magnetic force generating unit for generating a magnetic force to rotate the permanent magnet provided in the sample pretreatment module; and a penetration and discharge unit for penetrating the penetration membrane in the sample pretreatment module and discharging the sample by pressing the moving unit of the cap.