diaago 4.5mL CF Cryogenic Vial, Internal Thread, Self-Standing, Sterile 229919B

Features CELLTREAT Freeze Cryogenic Vials are designed for storing biological material at temperatures as low as -196°C, in the gas phase of liquid nitrogen Available in round bottom or self-standing options CELLTREAT product descriptions are based on the highest graduation mark on the vial. Other brands may name vials based on actual liquid capacity Self-standing re-sealable bags offer a unique storage solution External thread cap features integrated leak-proof seal, a long skirt for easy one hand aseptic methods, and a thread design allowing it to be removed or sealed with a mere 1 1/4 turn Internal thread cap prevents contamination and uses O-ring silicone seal to ensure positive seal at any temperature Caps have textured ridges to provide gripping when wearing gloves Contrasting black graduations are large and easy to view Large white marking area for writing also provides backdrop to enhance black graduations Self-standing base interlocks with Easy Grip Workstation Rack for easy one-handed opening Made in the USA