Thin wall construction assures uniform contact with the thermal cycler temperature block for optimal heat transfer. Available in both 8 tube strips and individual 0.2 mL and 0.5 mL tubes to cover all applications. Extensive quality inspections to ensure consistent performance. PurePak™ 4 mL thick puncture proof packaging keeps tubes contamination free. Tubes are certified free of DNase, RNase, Nucleic acids, ATP and Pyrogens.