Profile: Tomtec, Inc. specializes in providing laboratory instruments. Our products include liquid handling workstation, cell harvesters, plate sealer & washer, automated systems and consumables & disposables. The Quadra™ tower is designed to fill the gap between 8 and 12-channel, hand-held pipettors and Tomtec's™ high-level automation. It may be used in a simple, manual mode. Individual push buttons provide the basic functions of aspirating and dispensing by simply entering the volume desired. Other push buttons select tip-loading and tip-shucking. More sophisticated pipetting sequences can be fully programmed in a simple, intuitive manner and selected for repetitive applications. This is accomplished from the front control panel. It can also be integrated into a robotic system. In essence, the mode of operation is designed for operational convenience by a variety of users, using different skill levels.