Corning 250mL PP Centrifuge Tubes with Plug Seal Cap, Sterile, 6/Pack, 102/Case Corning 250mL polypropylene (PP) centrifuge tubes are ideal for applications requiring large volume centrifugation. Please check our Technical Information Listing for information on the physical and chemical properties of Corning plastic centrifuge tubes as well as important suggestions for safe use. Support cushions (Catalog No. 430236 for 250) must be used with this product unless the centrifuge rotor has appropriate V-bottom cushions. Polyethylene plug seal caps. Maximum RCF of 6,000xg Tubes are sterile and certified nonpyrogenic. Product Descriptions Qty./Pk.: 6 Qty./CS.: 102 Capacity: 250 mL Tube Style: Centrifuge Bottom Style: Conical Neck Style: Short Top Style: Threaded Max RCF: 6000 xg Graduations: Yes Graduation Range: 1.5-14.5 mL Graduation Interval: 0.5 mL Color: Natural Cap Style: Plug Seal Cap Material: High Density Polyethylene Cap Color: Orange Sterile: Yes Self-Standing: No Feature: Disposable Rack: No