CoolCell SV10 alcohol-free freezing containers provides highly reproducible -1℃/minute freezing rate for stem cells, primary cells, cell lines or other types of cells when cryopreserved in a -80℃ freezer. No alcohol required. The insulative outer housing and thermo-conductive 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.