The tubes are made for repeated cap closures and eliminates pressure induced popping of caps during incubation.

• LFR™ (Low Fluid Retention) Technology – for minimal sample retention and maximum sample integrity
• Will withstand up to 18,000 x g, in fully supported rotors
• RNase/DNase/Pyrogen Free
• Accurate graduations
• Temperature range from -80°C to 121°C
• Boiling or freezing of tubes will not pop caps open       
  

All tubes are made with virgin natural polypropylene. These are sterile, free of RNase, DNase, and non-pyrogenic. All tubes have flat cap and frosted side for marking with markers.