apparatus, setup - equipment designed to serve a specific function

haematocrit, hematocrit - a measuring instrument to determine (usually by centrifugation) the relative amounts of corpuscles and plasma in the blood

ultracentrifuge - a high speed centrifuge used to determine the relative molecular masses of large molecules in high polymers and proteins

ultracentrifuge - subject to the action of an ultracentrigue

spin - stream in jets, of liquids; "The creek spun its course through the woods"