Consisting of six models with capacities ranging from 0.5 to 3 liters, the Sorvall T1, T3 and G3 Centrifuge Series features units available in ventilated and refrigerated versions. Auto-Lock rotor exchange system, which is offered on the Sorvall T1 and RT1 models, enables secure rotor changes within five seconds. A range of safe, bio-contained accessories protects users by ensuring that hazardous materials are properly contained. ”Quick recall” keys on the user-friendly control panel provide instant access to frequently-used protocols and to the pre-cooling function.