The PowerSpin™ FX Centrifuge is the quietest centrifuge on the market today with a fixed speed of 3400 RPM. This device has a 6 place fixed angle rotor and a working capacity of either 6x10mL or 3x15mL. The power input is 110V. All PowerSpin™ FX models have a timer and on/off switch as well as other features that are normally only found on more expensive units.