Labcon SuperClear Ultra-High Performance Centrifuge Tubes with Flat or Plug Caps Polypropylene Tubes With Flat Caps. Combining top-notch and uncompromising quality with an affordable price the Labcon SuperClear Ultra-High Performance Centrifuge Tubes with Flat or Plug Caps Polypropylene Tubes With Flat Caps 3131-345-306/ 21008-216 can fulfill your laboratory needs while still offering a great value for the money. Product Category Description: Thick-Wall Construction for High Speed Operation Leakproof Available in Earth Friendly Recyclable Racks RNase- DNase- and Endotoxin-Free Validated ISO 11137 Sterile Process These popular conical-bottom centrifuge tubes are made of ultra-clear polypropylene copolymer. They feature printed graduations and smooth inner walls for easy filling and sample preparation. Printed writing area on side allows for permanent coding. Autoclavable at 122 C. Freezable to -90 C. Caps are available in two styles: flat with a smooth surface for additional labeling options and plug style for a secure seal when using shakers and horizontal incubators. All caps are made of high density polyethylene and are not autoclavable separate from tubes. Specifications for Labcon SuperClear Ultra-High Performance Centrifuge Tubes with Flat or Plug Caps Polypropylene 3131-345-306 Tubes With Flat Caps : Volume mL: 15 Sterility: Sterile Packaging: 50/Bag 10 Bags/Case Unit: Case of 500 Maximum RCF: 15500 g Dimensions 15 mL Tubes: 17dia. x 118L mm Dimensions 50 mL Tubes: 29dia. x 115L mm (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Labcon 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 Labcon 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 Labcon SuperClear Ultra-High Performance Centrifuge Tubes with Flat or Plug Caps Polypropylene Tubes With Flat Caps 3131-345-306/ 21008-216 we carry a full complement of Centrifuges as well as other product offerings from Labcon. We also carry a full line of Labcon accessories to help meet your laboratory and scientific needs. For a complete selection of Labcon Centrifuges please visit our Labcon 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. Labcon SuperClear Ultra-High Performance Centrifuge Tubes with Flat or Plug Caps Polypropylene 3131-345-306 Tubes With Flat Caps