Double injection molding instead of traditional silicone seal ring inserting, to ensure the sealing performance of the cap.

Do not use Cryogenic tubes in the liquid phase of liquid nitrogen. These cryogenic tubes are suited for research and general laboratory storage of cell cultures, bacteria and other samples in the vapor phase of liquid nitrogen.

Features

-Produced from virgin PP material, the cap with a silicone gasket mounted in cap for additional leak-proof assurance

-Large writing areas for more sample information  printed graduation for accurate measurement

-Sterilized and certified non-pyrogenic and RNase-free and DNase-free

-Self standing, star shaped and round bottom are available