Axygen Tecan Robotic Tips Axygen Scientific Nonfiltered Tips Black Liquid Sensing Hanging Tip. The center blue sleeve is designed to prevent tips from tangling during repetitive use and to keep the center of the tip stable during aspiration. The tips are made from highly polished polyethylene plastic tips with a hook to keep them in place during aspiration. They have nonsterile filtered tops and bottoms and are made of high-quality PP and are certified RNase- DNase- and pyrogen-free. The tips are certified RNase- DNase- and pyrogen-free. Specifications for Axygen Tecan Robotic Tips Axygen Scientific TT50CBKHTRS Nonfiltered Tips Black Liquid Sensing Hanging Tip: Volume L: 50 Description: Black Liquid Sensing Hanging Tip Sterility: Sterile Packaging: 96/Rack 24 Racks/Case Axygen No.: TT50CBKHTRS (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Axygen products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Pipets & Liquid Handling with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for Axygen Pipets & Liquid Handling. 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 Axygen Tecan Robotic Tips Axygen Scientific Nonfiltered Tips Black Liquid Sensing Hanging Tip TT50CBKHTRS/ 89040-084 we carry a full complement of Pipets & Liquid Handling as well as other product offerings from Axygen. We also carry a full line of Axygen accessories to help meet your laboratory and scientific needs. For a complete selection of Axygen Pipets & Liquid Handling please visit our Axygen page. For more brand name Pipets & Liquid Handling please visit our Pipets & Liquid Handling store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. Axygen Tecan Robotic Tips Axygen Scientific TT50CBKHTRS Nonfiltered Tips Black Liquid Sensing Hanging Tip