•  Made of medical grade polypropylene; Autoclavable; and can be repeatedly frozen and thawed
•  5ml vials are available with external screw threads, and 2ml vials are available with both external and internal screwthreads. External thread screw vials’ caps have no O-ring, which reduces the possibility of contamination
•  Fit 9×9(81-well) standard cryogenic boxes
•  Tubes with black graduation printing and white writing area