● Made of medical grade polypropylene; Can be repeatedly frozen and thawed
● Self-Standing and external threads
● Vials have a white writing area and black graduations
● Side 1D barcode and human readable numbers, on one vial make identification more convenient than ever
● Gamma radiation sterilized; DNase & RNase free, endotoxin free, foreign DNA free
● Working temperature: stable from -196°C to 121°C
● Suitable for liquid nitrogen freezing (gas phase)