Everyday Use. Solid Performance. Our PerformR centrifuge tubes combine reliable performance in major centrifuges. Spin rates higher than most popular brands. And high quality lab certified non cyto-toxic medical grade resin. PerformR tubes can be used in everyday lab work and give you more value than lesser quality tubes. High Performance Centrifugation: PerformR Centrifuge tubes are designed for your everyday centrifugation and storage needs. These tubes include large white solvent resistant labeling areas and black easy to read graduations. They are available with a flat cap that is easy to label. All package versions are sterilized with a validated and approved ISO 11137 method. Racked tubes are packaged in a reusable, autoclavable, and freezable (-80°C) polypropylene rack that inter-locks to allow you to create a workstation. PerformR tubes are available in packaging styles for all your needs, including reusable polypropylene racks, sterile-bulk bags, and non-sterile bulk bags. All our sterile products are radiation sterilized following a validated ISO 11137 method.