Foxx Life Sciences Autofil Centrifuge Bottles are designed specifically to assist Life Science researchers in processing samples for cell suspensions, cell lysates, tissue homogenates, and organ homogenates. Autofil Centrifuge Bottles are available in 250ml or 500ml and fit a wide range of rotors. Material options include polycarbonate or polypropylene with your choice of a traditional screw cap or a leak-proof sealing cap with silicone O-ring. Our centrifuge bottles feature thick walls that hold up to reuse along with wide mouths that simplify filling and pouring liquids. Each Autofil Centrifuge Bottle also features large, clear-molded graduation markings and a frosted area for convenient labeling. *Available with a standard cap which can be used for low speed applications, or the seal cap for leak-free processing.