Oak Ridge Centrifuge Tube, PTFE FEP body, Tefzel ETFE screw closure Ideal for high-speed centrifugation of aggressive chemicals. Excellent for chloroform and phenol extractions. Resist any acid, base or solvent. Autoclavable tubes withstand temperatures from -100°C to +150°C. For use in refrigerated and non-refrigerated centrifuges up to 50,000 x g. NALGENE sealing cap assemblies (Cat. No. DS3131-xxxx) are available for all sizes. . Nominal Capacity : 30 ml . NOTE: Before autoclaving, just set closure on top of the tube without engaging the threads. For proper performance must be filled to 100% of the total capacity. . Autoclavable/Biohazard/Leakproof†/PTFE FEP . . FOLLOW WEB-Link to ROTOR-MATCHING-GUIDE. Fits your choice in your rotor of your centrifuge?