Culture Tubes w/2-Position Caps, Sterile, 8 ml, 13 X 100 mm,

Gamma radiation sterilized, Polystyrene or polypropylene construction, Leakproof caps Sterile culture tubes are precision molded from premium-grade, chemically inert plastic materials: polystyrene (PS) for clarity and polypropylene (PP) for toughness and chemical resistance. Polypropylene material is almost transparent and withstands centrifugation to 6000 x g. Polystyrene tubes may be centrifuged to 3000 x g. Overfitting caps have inner ribs for two-position fits: loose for aerobic culturing and tight for anaerobic culturing and sealing with tabs to allow easy removal. Screwcaps have built-in sealing rings to provide leakproof closures. Most sizes are available with and without caps. All tubes are packaged in easy-to-open bags of 25 tubes each. Individual packaging is available for 12 x 75 mm, 13 x 100 mm, 17 x 100 mm, and 16 x 125 mm sizes. All tubes are gamma radiation sterilized and shipped ready to use. Quality Assurance protocol provides lot-to-lot uniformity, as well as traceability and reliable, consistent performance.