Bio Plas disposable polypropylene pestles may be used to homogenize cells or re-suspend precipitates such as protein or DNA pellets in buffer solutions. All the packaging options contain products free of detectable RNase, DNase, DNA and Pyrogens. These pestles and tubes are precision manufactured and quality controlled to firmly match together for maximum performance efficiency. Pestles are conveniently packaged into the appropriate size tubes, ready for use and are sterilized.