Abstract: A tansport system for biospecimens includes a conveyor including a conveyor each divided into two or more lanes by lane dividers means. Specimen carriers, each carrying one biospecimen container, include a base which engages the conveyor to transport the biospecimen container and at least three retainer members which are biased together to accept and retain the biospecimen container on the carrier. A variety of traffic control devices, such as diverters and singulators, as well as other control mechanisms such as orientation rails and orientation rollers are combined into control stations to manage the transport of the biospecimens through the system.

Abstract: An automated centrifuge includes a weighing station to weigh sample holding racks which arrive at the centrifuge and a rack handling robot to transfer the weighed racks to and from the centrifuge. A controller, which operates the rack handling robot, employs a novel balance method to have the rack handling robot load the sample holding racks in the centrifuge to obtain a best balance arrangement of the sample holding racks. If the balance method determines that the best balance arrangement will exceed one or more predefined balance thresholds, appropriate remedial action is taken by substituting a selected balance rack for a loaded sample holding rack.