Abstract: A quick-release clamp particularly suitable for microtomes is disclosed. The clamp has several fingers protruding from the face of the clamp assembly to grip an object. A pivotally mounted control arm first moves the protruding fingers away from the face of the assembly and then moves them away from the center axis of the assembly to provide clearance for removal of the object. The object preferably has tabs adapted to extend under a lip portion of the fingers.

Abstract: A two piece disposable blood chamber having registration means and a locking clip to prevent disassembly for sterilization is disclosed.

Abstract: A support tray for carrying and transmitting repetitious lateral motion to one or more containers has a plurality of parallel-spaced members extending transverse to the direction of motion and at least one retaining clip. The retaining clip can have upwardly-extending fingers for temporarily positioning a container and a twist lock for releasably engaging the spaced members to transmit lateral motion applied to the tray to the contents of the container and to position the container in a chosen location on the tray. A test tube rack can be fitted with a similar twist lock if it is desired to use one or more test tubes as the containers. The tray also has upwardly-extending handles which are used to transport the tray and support the same while repetitious motion is being transmitted to the container and its contents.