CoolCell LX controlled-rate alcohol-free cell freezing container provides a highly reproducible -1℃/minute freezing rate when placed in a -80℃ freezer. No alcohol or fluids required. The insulative outer housing and thermo-conductive solid state core ensure consistent heat removal to all vials throughout the freezing period. CoolCell containers are unbreakable, open easily when frozen, and are not cold to the touch when frozen - no "frosty" fingers. Numbered vial wells ensure easy sample identification. Beveled junction between base and lid and exposed vial tops in the base allow for quick and safe removal of frozen vials so they can be placed into long-term storage. Proven for use with stem cells, primary cells and cell lines.