2.0ml Sterile Cryogenic External Thread Vials

Made of medical grade polypropylene, autoclavable, and can be repeatedly frozen and thawed
External thread screw vial caps have no o-ring, which reduces the possibility of contamination
Fit 9×9 (81-well) standard cryogenic boxes
Tubes with black graduation printing, tubes top with white writing area, base with six corners, convenient to be operated
Gamma radiations sterilized RNase and DNase free, endotoxin free and foreign DNA free.
Working temperature: stable from -196°C to 121°C
Suitable for liquid nitrogen freezing