Abstract: Described are systems, devices, and methods which related to various aspects of assays for detecting and/or determining a measure of the concentration of analyte molecules or particles in a sample fluid. In some cases, the systems employ an assay consumable comprising a plurality of assay sites. The systems, devices, and/or methods, in some cases, are automated. In some cases, the systems, devices, and/or methods relate to inserting a plurality of beads into assay sites, sealing assay sites, imaging assay sites, or the like.

Abstract: A system and associated method for concentrating and separating components of different densities from fluid containing cells using a centrifuge includes a container defining a cavity for receiving the fluid. The container has a top, a sidewall extending from the top, and a bottom disposed opposite the top and in sealing engagement with the sidewall. An insert is slidably disposed in the cavity of the container and defines a lumen through the insert. The lumen, which includes a hole and a funnel-shaped upper portion in fluid communication with the hole, forms an open fluid path between opposite ends of the insert. The insert has a density such that upon centrifugation a selected component of the fluid resides within the lumen. A container port is disposed in the top of the container to transfer the fluid into the container and to withdraw a fluid component other than the selected component from the container.

Abstract: A shiftable bracket which has a body portion essentially tubular in length but significantly higher than it is wide and considerably longer than it is wide which has a central locking plate assembly is disclosed. The central locking plate assembly, in turn, has a locking flange at its remote end and a centrally oriented bore for receiving a lock plate assembly pin. A pair of lock plates are employed which are essentially the mirror image each of the other, and which have locking flanges at the remote ends for being positioned inside of a mast. Because they are in a pair, one can be inserted inside the mast slot, then the other one inserted, and thereafter the body of the shiftable bracket moved into position in alignment with the bores in the lock plate assembly, and thereafter the lock plate assembly pin pass through the two side plate portions of the body and pivotally engage the lock plate assemblies in place.