1. Made of high grade transparent PP material, widely used in molecular biology, clinical chemistry，biochemistry research.
2. Clear white or black graduation on tubes, Lage white writing area for easy marking.
3. Easy One-hand operation to open or close the cap.
4. Maximum RCF at 12000×g.
5. Adapted to wide range temperatures from -80°C to 120°C.
6. Available in bulk or individual pack.
7. Available in sterile by E.O. or Gamma radiation.