Simport Micrewtube Microcentrifuge Tube, 2mL, with Washer Screw Seal and O-Ring, Polypropylene, 1000 Pieces/Case Case

A Simport Scientific Micrewtube® is ideal for freezer storage, boiling application, centrifugation etc. The cap is molded with a deep internal lip that fits snugly against the interior wall of the tube thus preventing the contents from coming in contact with the seal or threads.