United Scientific Supply Cryo Vial,Internal Thread

United Scientific Supply Cryo vials are designed for storage of samples as low as -196В Degree 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 Not recommended for use in the liquid phase of liquid nitrogen, Can be used in vapor phase of liquid nitrogen - USS