McKesson Variable Speed Centrifuge Product Features Push button keypad controls, easy to use while wearing gloves Six place horizontal spin rotor for use with standard 2 to 12 mL tubes Optional adapters may be required for tubes less than 10 mL or 100 mm length Variable speed 500-3,500 RPM G-Force (RCF) at 1777g Electronic 1-99 minute timer with beep signal at end of the run Memorized time settings: The centrifuge will memorize the last time settings when the unit is turned off It will resume the previous time settings when the unit is turned on Maintenance free brushless AC motor, super quiet Safety: Zero RPM lid latch protection: The centrifuge lid cannot be opened until the unit stops spinning It will not run unless the lid is properly closed Suction cup synthetic feet for stable bench top operation Variable Speed Centrifuge McKesson 6 Place Horizontal Rotor Variable speed 500-3,500 RPM