Globe Scientific's CryoClear vials are the highest quality and most innovative line of cryogenic vials available on the market. The vials are designed for the cryogenic storage and transport of biologicalo specimens at temperatures as low as -196 C. CryoClear caps are produced using the latest in molding technology, where plastic and thermoplastic elastomer (a rubberized material) are co-injected and molded together. This process provides the leak-proof benefits of an o-ring, while eliminating the risk of contamination and other problems associated with separate o-ring gaskets. Each vial is printed with a unique barcode for automated data collection, accurate sample inventory and to hide the identity of the sample.