Features:

1. Made of medical grade polypropylene; Autoclavable, 

  can be repeatedly frozen and thawed.

2. 2ml/5ml external thread, with/out side barcode.

3. 7 different colored caps, black graduation printing and white writing area.

4. Gamma radiations sterilized, DNase & RNase free, endotoxin free, foreign DNA free.

   Stable from -196°C to 121°C (gas phase of liquid nitrogen).