Sterile ROTI ® Store cryo vials sterile, ready-to-use ROTI ® Store cryo vials are ideal for preparing freezing stocks from different microorganisms, even DMSO-sensitive organisms. The stocks are protected by a special cryo medium during freezing. Optimally suited for cryopreservation of recombinant bacteria in genetic engineering. Preparation of cryogenic cultures Safe storage Simple recultivation Ø 12.5 mm, length 49 mm. Directions for use To freeze, pipette and mix 0.5 ml fresh culture solution into a ROTI ® Store cryo vial. Remove the supernatant and freeze the vial. To recultivate, take one of the beads and inoculate the desired culture medium. Store at -80 °C or in liquid nitrogen. Short-term storage for a few days at -20 °C is possible. Also suitable for conservation of marine microorganisms, even during field work (Siebert et al. , Appl. Environ. Microbiol. 2004 (70) 5912-5).