Abstract: A centrifuge tube adapter for supporting a closed tube in a cavity of a vertical angle centrifuge rotor includes an inboard and an outboard adapter segment. A hinge connects the segments and supports relative pivotal movement of one segment with respect to the other. The hinge comprises a pair of axles formed at the lower end of one segment and a pair of trunnions formed at a corresponding location on the other segment. The inboard segment has a flange and the outboard segment has a channel therein sized to receive the flange. The flange has serrations thereon.

Abstract: An adapter for a centrifuge tube comprises two segments that may be hinged along a hinge axis that extends perpendicular to the axis of the adapter.

Abstract: An adapter for a centrifuge tube comprises two adapter segments, each of which has an exterior surface and a mating surface thereon. Each segment has a pair of indentations in the mating surface. When the segments are joined along their mating surfaces the indentations cooperate to define a pair of recesses therein. Each recess so defined is configured to surround totally a centrifuge tube disposed therein. Each recess has an axis extending therethrough, with the axes of the recesses being collinear. The collinear axes of the recesses are aligned parallel to the axis of rotation of the rotor, and preferably also align collinearly with the axis of the rotor cavity in which the adapter is disposed. Each adapter segment is fabricated of a material that has sufficient strength to withstand the vertical forces created by the pressure of a liquid under centrifugation.

Abstract: An adapter for a swinging bucket centrifuge rotor includes a slide plate having a retaining lip and a cam surface thereon. Movement of the plate in one direction to a holding position disposes the lip to hold above the rim of a microtube to hold the same in place. Movement in an opposite direction introduces a cam surface between the rim of the tube and a flange on a closure to thereby uncap the same.