Key Features Compatible with vapor and liquid storage modes. Various capacity optional to meet your storage requirements. More specimen capacity in a limited space to reduce the storage costs. One button to demist, easy to search, pick and place specimen. User-friendly design, comfortable operation. Equipped with folding steps and workbench. Reliability Excellent temperature uniformity and stability,Vacuum insulated stainless steel structure, high vacuum coverage to ensure excellent insulation properties. SAFETY Excellent temperature stability after opening lid,Innovative lid and excellent small neck openings design can greatly reduce the liquid nitrogen evaporation rate. Controlling system can permanently store operating data. Advanced temperature, level monitoring and alarm system, Microprocessor-based control system and the vertical double platinum resistance temperature probe can display real time temperature. The user can set their own alarm temperature value, with alarm mute option. Automatic filling liquid nitrogen system, safe and efficient. Lockable lid, fully guarantee the safety of the specimen