CryoMAX™ Sterile Cryogenic Vials . Features ScrewCaps with molded-in sealing ring 'Seal-Ring' for a leak-resistant closure. Packaged sterile, CryoMAX cryogenic vials are suitable for storing cell cultures, blood/serum specimens, sperm, and other biological specimens at vapor phase liquid nitrogen temperatures (-320°F/-196°C). RNase, DNase, pyrogen Free. CryoMax® Vials are available with