Globe's GCM Series was designed with your lab in mind. . . whether you spin-down micro centrifuge tubes, PCR tubes or PCR Strips, the GCM will provide you with reliable performance use after use. Operating the GCM is quick and easy; close the lid to accelerate to 7, 000rpm and simply open the lid for quick deceleration to stop. Included in all GCM Mini Centrifuges are an eight (8) position micro centrifuge tube rotor for 1. 5 / 2. 0mL tubes, a PCR tube rotor that accommodates 0. 2mL tubes and strips as well as eight (8) adapters for 0. 2mL tubes and eight (8) adapters for 0. 5mL tubes. Changing rotors requires no tools - simply pull up to remove and press down to replace.