These 5 ml sterile pyrogen-free screw cap tubes come in a polystyrene rack and are supplied with 20 mm (OD) caps that seal smoothly and completely with a single 360° turn. Useable from -86°C to 110°C, they are a valuable vessel for boiling and low temperature sample preservation.
The tubes are made of maximum clarity, low-binding virgin polypropylene and are certified RNase & DNase free. 5.0 ml tubes are sized to be compatible with most centrifuges, dry bath block heaters, tube racks and thermal shakers/vortexers.
The 16 mm tube diameter is identical to the diameter of standard 15 ml tubes, which ensures further compatibility with centrifuge rotors, etc. In many applications, these tubes have replaced 15 ml tubes, dramatically reducing plastic waste, storage space and shipping costs. The potential contamination of pipettor shafts is greatly reduced because the 56 mm total tube length (vs. 120 mm for standard 15 ml tubes) is short enough for standard 1.0 ml or 5.0 ml tips to reach the tube's conical bottom.
Maximum centrifugal force: 25,000 x g (when properly supported in an appropriate rotor cavity)