Description_x000D_ General description_x000D_ Vials designed for exceptional ease of use and sample integrity in ultra-low temperature storage. Closure seals without gasket or O-ring, minimizing risk of contamination. The deep skirt of the closure allows single-handed aseptic technique without exposing fingers to vial contents. Ribs around the bottom of the vial interlock with wells in the Cryovial Racks so the vial will not turn when opening or closing. Bottoms of vials are skirted; vial stands without holder._x000D_ Sterile vials and closures are pre-assembled and radiation-sterilized. A white marking area, fill line and graduations are printed on the side. Certified sterile, non-cytotoxic and non-pyrogenic._x000D_ Note: Do not use cryogenic vials for storage in the liquid phase of liquid nitrogen unless correctly sealed in Nunc CryoFlex™ tubing. Such use may cause entrapment of liquefied nitrogen inside the vial and lead to pressure build-up resulting in possible explosion or biohazard release._x000D_ Legal Information_x000D_ CryoFlex is a trademark of Thermo Fisher Scientific or its subsidiaries_x000D_ Nalgene is a registered trademark of Thermo Fisher Scientific or its subsidiaries