These conical-bottom polypropylene copolymer centrifuge tubes combine the better separation/pelleting capabilities of a conical tube with the superior sealing capabilities of Oak Ridge tubes. Polypropylene screw closure. Graduations silkscreened from 5 to 35 mL in 1-mL increments. Accommodate NALGENE sealing caps (Cat. No. DS3132-0024) and require conical-tube adapter (Cat. No. DS3147-0050). Molded of PPCO for better chemical resistance. Tubes are translucent but contact clear for easy liquid viewing. Before autoclaving, just set closure on top of tubes without engaging the threads. Must be filled to 80% of the total capacity for proper performance. To assure leakproof service, especially at speeds greater than 10,000 x g or when spinning hazardous materials, NALGENE sealing cap assemblies (Cat. No. DS3132) are recommended.
