Abstract: A disposable laboratory device for transfer of fluids, such as biological fluids or reagents, to specific wells of a centrifugal analyzer head. The device itself is a disposable, multi-compartmental system within an arcuately extending enclosure. In the preferred embodiment, the enclosure extends in a circular arc of approximately 120.degree., whereby one-third of the wells arranged around a circular centrifugal analyzer head can be filled with a single manipulation. Each of the compartments is preferably trapezoidal in plan view, with a bottom surface that includes an outlet means for each compartment proximate radially innermost portions of the enclosure. Equal volumes of pressurized gas distributed to each of the compartments exactly dispense equal volumes from each of the compartments into wells in a circular analyzer head which is held in a registration position.

Abstract: A manipulative laboratory device for transferring biological fluid from one or more primary containers to an associated secondary set of containers through a disposable closed compartment system. The compartment system allows for greatly simplified decanting procedures, for example, in pouring off serum samples in blood analyses. The transfer device is preferably of transparent plastic material, and allows for complete isolation among respective samples and selective transfer of controlled volumes of biological fluid when combined with a pump, through means to apply equal volumes of pressurized gas to each of the compartments. The transfer device allows, serum, for example, to be held and filtered during transfer, while maintaining the serum within a closed compartment to reduce the risk of hepatitis and similar infectious transmissions to operating personnel.