Cryo Vial Internal Threaded, Sterile, PP, 4.5mL, Round Base, Pack of 250

Details:

Cryo vials are designed for storage of samples as low as -196°C*. DNase, RNase,and Pyrogen-free. Radiation sterilized. Polypropylene vials include a cap embedded with a non-toxic silicone O-ring for a secure seal, a large white frosted labeling area, and silk screen graduations. Star base and round base vials have an internal U-shaped bottom. Slef-standing star base vials are designed for one-handed use with a support rack.  *Not recommended for use in the liquid phase of liquid nitrogen, Can be used in vapor phase of liquid nitrogen.