In a centrifuge having a rotor with a rotor body that holds a sample and that is rapidly rotated, an inclined surface that extends upward as it extends radially outward is formed on an upper-side outer peripheral portion of the rotor, in a region that is at a radially outward side and at an upper side of the outer edge of an opening. The inclined surface is a continuous ring-like inclined surface that has the same cross-sectional shape in the circumferential direction and is formed into a straight-line shape or a curved-line shape in cross-section along a rotation central axis. Although winds occur during high-speed rotation of the rotor, the winds are rectified by the inclined surface, and a component force for pressing the rotor body in a downward direction acts thereon.

A centrifuge to which sample tubes can be introduced while the centrifuge is in motion. The centrifuge comprises a carousel having an upper portion and a lower portion. The upper portion of the carousel has a plurality of positions for sample tubes for a centrifugation operation, a plurality of drive mechanisms attached to the upper portion of the carousel, a movable element mounted upon each drive mechanism, the movable element capable of traversing the length of the drive mechanism when the drive mechanism is actuated, a sample tube-holding assembly comprising a sample tube holder and a bearing attached to each movable element, and at least one balancing element capable of contributing to a force vector that cancels an imbalance vector generated by rotation of the centrifuge.

A rotor assembly includes a rotor plate to rotate around a first axis; a bucket rotatably attached to the rotor plate and to rotate around a second axis; and a stop plate to rotate around the first axis relative to the rotor plate between an open position and a closed position, when in the closed position, the stop plate is to engage the bucket to fix an angular position of the bucket relative to a plane of rotation of the rotor assembly.

The present invention relates to a high speed shatterproof contamination proof refrigerated centrifuge for cell extraction, comprising a housing, a central console disposed inside a chamber of the housing, a refrigerating mechanism disposed inside the housing, a separation mechanism, a pair of roll wheels disposed at a bottom of the housing and a shatterproof recollection device; a ring shaped working sink for installing the separation mechanism is disposed at a top wall of the housing; a ventilation hole and a control panel is disposed at two sides of the housing respectively; the separation mechanism comprises a centrifuge rotor disposed inside the ring shaped working sink and a rotational motor for driving the centrifuge rotor. The high speed shatterproof contamination proof refrigerated centrifuge for cell extraction of the present invention has the advantages of having a simple structure, sensible design, high rotational speed, and having refrigerating, angle adjustment and shatterproof recollection features. The high speed refrigerating centrifuge can also satisfy a higher requirement of material separation, refinement and purification.

An automated apparatus suitable for the preparation of genetically transformed cells from biological fluids including of an operating unit and a rotating concentric hollow processing chamber able to automatically process biological samples, such as white blood cells from apheresis, bone marrow or cultured cells, to manufacture genetically engineered cells. The operating unit is rotatable around its center about a horizontal axis and the processing chamber is rotatable about its central rotor axis perpendicular with the rotating axis of the operating unit. The processing chamber can be operated at high rotating speeds when oriented vertically to generate centrifugal force on the contained sample allowing separation of solids from liquids and at low speeds or by series of fast sequential clockwise and counterclockwise rotations when oriented horizontally for incubation, solid resuspension and magnetic beads magnetic attachment.

There can be provided a tube rack of a centrifugal separator, in which a bottom rubber portion can be readily mounted and readily replaced, and yet such bottom rubber portion cannot be easily separated. The tube rack includes a holder (14) including a plurality of tube holes (12) each configured to accommodate a tube that is used for a sample and each includes an opening at one end portion of the holder serving as a tube insertion side, and an opening at a bottom portion of the holder that is at the other end. The tube rack includes a bottom rubber portion (15) including a plurality of bottom rubber members (25) each fits in the tube hole (12), and including connecting pieces (24). The tube rack includes a base (13) formed in a cylindrical shape having a bottom configured to accommodate and detachably hold the holder (14) and the bottom rubber portion (15), and to be inserted into a bucket of the centrifugal separator.

An automated computer-controlled sampling system and related methods for collecting, processing, and analyzing agricultural samples for various chemical properties such as plant available nutrients. The sampling system allows multiple samples to be processed and analyzed for different analytes or chemical properties in a simultaneous concurrent or semi-concurrent manner. Advantageously, the system can process soil samples in the as collected condition without drying or grinding. The system generally includes a sample preparation sub-system which receives soil samples collected by a probe collection sub-system and produces a slurry (i.e. mixture of soil, vegetation, and/or manure and water), and a chemical analysis sub-system which processes the prepared slurry samples for quantifying multiple analytes and/or chemical properties of the sample. The sample preparation and chemical analysis sub-systems can be used to analyze soil, vegetation, and/or manure samples.

An automated computer-controlled sampling system and related methods for collecting, processing, and analyzing agricultural samples for various chemical properties such as plant available nutrients. The sampling system allows multiple samples to be processed and analyzed for different analytes or chemical properties in a simultaneous concurrent or semi-concurrent manner. Advantageously, the system can process soil samples in the as collected condition without drying or grinding. The system generally includes a sample preparation sub-system which receives soil samples collected by a probe collection sub-system and produces a slurry (i.e. mixture of soil, vegetation, and/or manure and water), and a chemical analysis sub-system which processes the prepared slurry samples for quantifying multiple analytes and/or chemical properties of the sample. The sample preparation and chemical analysis sub-systems can be used to analyze soil, vegetation, and/or manure samples.

A centrifuge including a lid section of a sample container, the lid section having a rotating shaft for swinging, and a swing-type rotor, and the centrifuge conducts centrifugation operation in a state where the sample container is seated in a bucket housing section by making the sample container in which the rotating shaft is mounted to a rotating shaft engagement groove of the rotor swing due to the rotation of the rotor. The rotating shaft comprises a plurality of members connected by a connection section and is configured so as to be bendable at the connection section by a centrifugal load accompanying the rotation of the rotor.

The invention discloses an analytical sample preparation device and an analytical sample preparation method, which comprises a base (1), an elastic connection body (5), a group of a synchronous unidirectional bearing inner ring (41) and a synchronous unidirectional bearing outer ring (42), a group of an eccentric unidirectional bearing inner ring (61) and an eccentric unidirectional bearing outer ring (62), and a synchronous fixed ring (2) and a motor (31) on the base (1). The eccentric unidirectional bearing inner ring (61) is connected with an eccentric shaft (32) extending from a motor (31). The eccentric unidirectional bearing outer ring (62) is fixed to an eccentric shaft sleeve (9). The eccentric shaft sleeve (9), the eccentric shaft (32), the eccentric unidirectional bearing inner ring (61), and the eccentric unidirectional bearing outer ring (62) have their center of mass disposed on a line extending from the center line of the motor (31). The eccentric unidirectional bearing inner ring (61) and the eccentric unidirectional bearing outer ring (62) can only rotate in direction A, while the synchronous unidirectional bearing outer ring (41) and the synchronous unidirectional bearing outer ring (42) can only rotate in a direction opposite to direction A.