The Ovation design changes the concept of liquid transfer by reducing the causes of pain, fatigue, and stress from pipetting. Work for hours without tensions in the shoulder or elbow! Never over-rotate your wrist or hand — the Ovation pipettor was formulated to keep your hand in the neutral position recommended by ergonomic experts. A low-force, form-fitting plunger manually controls aspiration and dispensing speeds with minimal effort.The Ovation pipettor is acceptable for use with especially fragile membranes that can easily be disrupted or fluids that tend to bubble. Handling is also fast and easy with the unique tip acquisition system that delivers an audible "click" to indicate that all tips have been securely fitted. Just the touch of a button immediately ejects all tips.The large LCD display and motor-driven volume adjustments offer precise transfer, with up to five "one-button" presets. Set up and stored your most used settings for routine use and later recall. Other volume settings can be selected at precise increments throughout the pipettor's range. Pipettor accommodates both left- or right-handed users. Return to the factory calibration setting with the push of a button, making in-lab calibration simple.