Nalgene™ Oak Ridge High-Speed PPCO Centrifuge Tubes with Sealing CapNalgene Oak Ridge High Speed PPCO Centrifuge Tubes with Sealing Cap Use these contact clear high speed PPCO centrifuge tubes with sealing caps to easily view the contents. Closure Material: Polypropylene, red rubber Capacity (Metric): 10 mL Sterility: Non sterile Autoclavable: Autoclavable Diameter (Metric) Outside: 16. 1 mm Graduations: No Shape: Round Type: Centrifuge Tube Max. Force: 50,000 x g Length (Metric): 82. 8 mm Bottom Shape: Round Closure