We offer microcentrifuge tubes made from high quality polypropylene. Our microtubes come with attached flat tops in various colors, suitable for a wide variety of separation and centrifugation tasks. Our centrifuge tubes are made from high clarity polypropylene. These conical bottom tubes come with smooth, flat surface polyethylene caps in bulk or racked. Extended caps on conicals help prevent contamination, making these conical tubes suitable for various laboratory applications. Polystyrene and polypropylene test tubes also available. For microtubes or conicals holders/carriers, see our selection of UltraCruz™ Microcentrifuge Tube Racks and UltraCruz™ Centrifuge Tube Racks.