Browse our comprehensive selection of centrifuge and microcentrifuge tubes in a wide range of sizes. We offer centrifuge tubes in 15 and 50 ml as well as 250 and 500 ml sizes, and microcentrifuge tubes in sizes ranging from .6 ml to 5 ml. Centrifuge tubes are used to store and handle liquids during the centrifugation process. Samples are placed in a machine, and spun at high speeds around a fixed axis, this high rotational speed creates a centrifugal force causing the liquid sample to separate into its various components. This process is a crucial step in many industrial and clinical sectors from diagnostic testing to biomolecular research.