VWR Centrifuge Bottles with Caps Spherical-Bottom Polypropylene Bottle With Screw Cap. The spherical-bottom shape of these centrifuge bottles allows for better centrifugation of heavier fractions over standard conical-bottom bottles. These BMP centrifuge tubes provide a tighter fit in centrifuge rotors and have slightly thicker walls making centrifugation of heavier loads more efficient. Centrifuge Bottles made from polycarbonate or polypropylene resist acids bases and most organic solvents. Caution: Maximum RCF ratings are based on using the proper rotor and/or support cushions. These bottles may distort and/or fail without the proper support. Specifications for VWR Centrifuge Bottles with Caps Spherical-Bottom BMP-CE-908 Polypropylene Bottle With Screw Cap : VolumemL: 500 MaximumRCF g: 8250 Diametermm: 68 Lengthmm: 168 (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Biomedical Polymers products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Centrifuges with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for VWR Centrifuges. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the VWR Centrifuge Bottles with Caps Spherical-Bottom Polypropylene Bottle With Screw Cap BMP-CE-908/ 47735-696 we carry a full complement of Centrifuges as well as other product offerings from Biomedical Polymers. We also carry a full line of VWR accessories to help meet your laboratory and scientific needs. For a complete selection of VWR Centrifuges please visit our Biomedical Polymers page. For more brand name Centrifuges please visit our Centrifuges store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. VWR Centrifuge Bottles with Caps Spherical-Bottom BMP-CE-908 Polypropylene Bottle With Screw Cap