The Excel is a multifunctional pipette that is fully motorized, eliminating hand strain and allowing efficient multi-dispensing. A high precision stepping motor controls piston action, resulting in exceptional accuracy and precision and minimal pipetting forces. Accuracy is further enhanced by a state-of-the-art microprocessor which controls the action of the stepping motor. The calibration of the unit is checked each time an operation is performed. The Excel features an adjustable tip ejector along with a universal tip shaft designed for compatibility with a wide variety of manufacturers’ tips. The lower portion of the pipette is easily removed for autoclaving. Each pipette is individually tested and supplied with a certificate of quality. Also included is a shelf clip, lithium ion battery and battery charger.