The Thermo Scientific MicroCL 21 microcentrifuges are compact, easy-to-use and available in both ventilated and refrigerated models. With intuitive controls and the innovative ClickSeal biocontainment lid, they are ideal for micro-volume protocols such as nucleic acid or protein lysate preparation and PCR reaction set-up. Max speed: 14,800RPM or 21,100 x g. Refrigerated version can cool in just nine minutes, temp range -9 to +40°C at 1°C increments. ClickSealR biocontainment rotor lid clicks in place for secure containment. Standard rotor runs 24 tubes in a single row – 1.5 to 2mL tubes and mini prep/spin columns.