Apparatus for separating the constituents of a sample liquid introduced in the apparatus.To separate constituents with specific weight higher of those constituents with a specific weight lower under the action of the centrifugal force; and the set of double barrier to the introduction in the U.M collection tube of liquid evacuavel

摘要

A device is provided for separating the components of a liquid sample by centrifugation by dividing that portion of the sample having a higher specific gravity from that portion having a lower specific gravity, by utilizing a dual component assembly arranged to move in an evacuated container into the area adjacent the two portions of the sample under centrifugal force. The assembly includes a substantially rigid core component which nests within a cup-shaped elastomeric component, and which components interact with each other to provide alternating dual seals and open flow paths in response to different pressure differentials on each side thereof.