UNITED SCIENTIFIC Cryo Vial, Internal Thread, 4.5ML ROUND BASE. Sterile, Pkg/250

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. Self-standing star base vials are designed for one-handed use with a support rack.