Tube holder for centrifuge rotor

A test tube holder for insertion into a cylindrical test tube cavity in a centrifuge rotor, comprising

• a body in the shape of a longitudinal section of a cylinder having a longitudinal flat surface and having a plurality of smaller cavities for holding test tubes, the smaller cavities being spaced apart along the longitudinal dimension of the body, each smaller cavity being oriented at an angle to the longitudinal dimension of the body, and each smaller cavity having a mouth opening to the longitudinal flat surface;
• a cover in the shape of a longitudinal section of a cylinder having a longitudinal flat surface, the longitudinal flat surface of the cover being adapted for mating with the longitudinal flat surface of the body in such a way that the mated cover and body combination has a cylindrical shape with the cover enclosing the mouths of the smaller cavities in the body;
• means for fastening the cover to the body;
• and
• orienting means, comprising a tab adapted for insertion into an indexing notch in the centrifuge rotor at the top edge of the centrifuge rotor test tube cavity, for orienting the test tube holder in the centrifuge rotor test tube cavity so that the mouths of the smaller cavities substantially face the rotational axis of the centrifuge rotor when the test tube holder is inserted into the centrifuge rotor test tube cavity.

A test tube holder for insertion into a cylindrical test tube cavity in a centrifuge rotor, comprising

• a body in the shape of a longitudinal section of a cylinder having a longitudinal flat surface and having a plurality of smaller cavities for holding test tubes, the smaller cavities being spaced apart along the longitudinal dimension of the body, each smaller cavity being oriented at an angle to the longitudinal dimension of the body, and each smaller cavity having a mouth opening to the longitudinal flat surface;
• means for orienting the test tube holder in the centrifuge rotor test tube cavity so that the mouths of the smaller cavities substantially face the rotational axis of the centrifuge rotor when the test tube holder is inserted into the centrifuge rotor test tube cavity;
• a cover in the shape of a longitudinal section of a cylinder having a longitudinal flat surface, the longitudinal flat surface of the cover being adapted for mating with the longitudinal flat surface of the body in such a way that the mated cover and body combination has a cylindrical shape with the cover enclosing the mouths of the smaller cavities in the body;
• and
• means for fastening the cover to the body comprising
• a retaining lip attached to the body and extending above one end of the longitudinal flat surface thereof so as to leave a groove-shaped space between the retaining lip and the body;
• a tongue extending from one end of the cover, the tongue being adapted for insertion in the groove-shaped space so as to retain said end of the cover against the body;
• and
• an L-shaped clamp pivotally attached at one of its ends to the end of the body opposite that from which the lip extends, the clamp being adapted to overlap the outer surface of the cover and fasten the cover to the body.