Abstract: A fixed angle centrifuge rotor is provided including a rotor body having an upper surface and a plurality of tubular cavities extending from the upper surface to respective bottom walls. A pressure plate is operatively coupled to the bottom walls of the tubular cavities and is configured to transfer torque to the bottom walls. The pressure plate is configured to be directly coupled to a rotor hub and to receive torque directly from the rotor hub.

Abstract: A rotor hub assembly for a centrifuge rotor includes a rotor hub including a head portion, an elongated shaft portion extending axially away from the head portion and a central bore extending through the head portion and the shaft portion. The head portion includes a plurality of balancing bores each configured to selectively receive at least one balancing weight for balancing the centrifuge rotor. A method for balancing a centrifuge rotor is also provided.

Abstract: A rotor for use in a centrifuge, and a method for balancing the rotor. The rotor includes a plurality of apertures arranged circumferentially around the rotor's axis of rotation, each configured to selectively receive a weight. A critical speed is determined for the rotor, and an imbalance determined for the rotor at a test speed below the critical speed. A trial weight is installed in a reference aperture, and another imbalance determined at the test speed. The trial weight is repeatedly moved to another aperture angularly displaced from the previous aperture, and the imbalance measured at the test speed until a predetermined number of imbalance measurements have been obtained. A target mass and location for balancing the rotor is determined from the imbalance measurements, and balancing weights installed in apertures based on the target mass and location. The balancing process may be repeated for multiple critical frequencies.

Abstract: A tool for removing first and second centrifuge bottle closure members from a centrifuge bottle includes a tool head including an aperture sized and shaped to receive a protruding portion of the first centrifuge bottle closure member. The tool further includes an elongate shaft extending from the tool head to a distal end and including a tapered portion adjacent the distal end. The tapered portion is sized and shaped to be at least partially inserted in a recessed portion of the second centrifuge bottle closure member. The aperture is configured to transfer torque to the first centrifuge bottle closure member during a rotating operation of the tool and the tapered portion is configured to exert an output force on the second centrifuge bottle closure member during a prying operation of the tool.

Abstract: A fixed angle centrifuge rotor includes a rotor body having a circumferential sidewall and a plurality of circumferentially spaced tubular cavities. Each tubular cavity has an open end and a closed end, and is configured to receive a sample container therein. The rotor further includes a pressure plate operatively coupled to the rotor body so that the pressure plate, in combination with the plurality of tubular cavities and the circumferential sidewall of the rotor body, define a hollow chamber within the rotor. The rotor further includes a plurality of elongated torque transfer members supported by the rotor body and an annular containment groove.

Abstract: A fixed angle centrifuge rotor includes a rotor body having a circumferential sidewall and a plurality of circumferentially spaced tubular cavities. Each tubular cavity has an open end and a closed end, and is configured to receive a sample container therein. The rotor further includes a pressure plate operatively coupled to the rotor body so that the pressure plate, in combination with the plurality of tubular cavities and the circumferential sidewall of the rotor body, define a hollow chamber within the rotor. The rotor further includes a plurality of elongated torque transfer members supported by the rotor body and an annular containment groove.

Abstract: A closure for attachment to a container body of a sample container for use in a centrifuge includes a top wall, an annular skirt wall depending from the top wall and defining a maximum outer diameter, and a handle extending from the top wall and including a central boss and at least two finger grips extending radially outward from the central boss. A respective free terminal end of each of the finger grips is located so as not to extend beyond the maximum outer diameter.

Abstract: A fixed angle centrifuge rotor includes a rotor body having a circumferential sidewall and a plurality of circumferentially spaced tubular cavities. An annular containment groove is disposed above and circumferentially surrounds the tubular cavities. Each tubular cavity has an open end and a closed end, and is configured to receive a sample container therein. The rotor further includes a pressure plate operatively coupled to the rotor body so that the pressure plate, in combination with the plurality of tubular cavities and the circumferential sidewall of the rotor body, define a hollow chamber within the rotor. The pressure plate includes circumferentially spaced upstanding tabs that are received in respective pockets located between adjacent tubular cavities. The rotor further includes a plurality of elongated torque transfer members supported by the rotor body.

Abstract: A closure for attachment to a sample container for use in a centrifuge includes a top wall, an annular skirt wall depending from the top wall and defining a maximum outer diameter, and a handle extending from the top wall and including a central boss and at least two finger grips extending radially outward from the central boss. A respective free terminal end of each of the finger grips is located so as not to extend beyond the maximum outer diameter.

Abstract: A centrifuge rotor is provided having a rotor core that defines a rotational axis of the rotor. A plurality of bucket supports is arranged about the axis of rotation. The rotor includes first and second straps that respectively wrap around two diametrically-opposed ones of the bucket supports for restricting outward movement of the two bucket supports relative to the rotor core. The first and second straps intersect one another at a location through the axis of rotation of the rotor.

Abstract: A centrifuge rotor is provided. The rotor includes a compression-molded rotor body that includes a central hub defining an axis of rotation of the rotor body, and a plurality of bays, each configured to receive a bucket therein. A plurality of load transferring members are integrally molded with the rotor body and each include a bucket support for supporting a bucket, with the bucket support permitting pivoting movement of the bucket during centrifugation of the rotor body about the axis of rotation. A reinforcement layer extends circumferentially and/or helically around an exterior of the rotor body.

Abstract: A fixed angle centrifuge rotor is provided. The rotor includes a rotor body having a circumferential sidewall and a plurality of tubular cavities. Each of the cavities has an open end and a closed end and is configured to receive a sample container therein. A pressure plate is operatively coupled to the plurality of tubular cavities so that the pressure plate, in combination with the plurality of tubular cavities, defines an enclosed hollow chamber between each adjacent pair of the plurality of tubular cavities. Each of the plurality of tubular cavities has a sidewall facing an interior of the rotor body and a bottom wall at the closed end.

Abstract: A centrifuge rotor includes a rotor body having a central hub and first and second bucket receiving spaces defined on diametrically opposed sides of the rotor body. A first pair of bucket supports is supported by the rotor body for pivotally supporting a swing bucket in the first bucket receiving space, and a second pair of bucket supports is supported by the rotor body for pivotally supporting a swing bucket in the second bucket receiving space. The rotor further includes reinforcing material wound around oppositely disposed ones of the first and second pairs of bucket supports.