When built-in temperature control is not needed, Excella open-air shakers are the solution. Ruggedly-built for use on the bench, in an incubator, or in a warm- or cold-room, these shakers are available in three sizes. The Excella microprocessor controlled, heavy-duty counterbalanced drives provide years of continuous, quiet operation. Excella shakers are available with a large selection of accessories to accommodate a wide range of flasks and test tubes. Like most New Brunswick shakers, Excella platforms, clamps and accessories are interchangeable with earlier NBS models. The Excella model E2 digital open air shaker accommodates flasks up to 500 mL on an 11"?×?13" accessory platform. Features Heavy duty, counterbalanced drive with DC brushless motor and permanently lubricated bearings provide long life and is virtually maintenance-free Self-correcting microprocessor controller automatically compensates for changes in workload and voltage to maintain operator-programmed setpoints Includes an acceleration/deceleration circuit prevents sudden starts & stops