Lightweight and UV resistant with Lithium Ion Battery. STERIPETTE Pro cordless pipette controller provides the power and responsiveness you need. Whether working with large or small volumes, or standard or viscous solutions, STERIPETTE Pro allows accurate, precise measurements with easy two-speed fingertip control. Choose from fast transfers, slow and controlled aspirations and deliveries, or a combination of speeds. There are no dials to adjust, and the gravity-drain feature releases liquids smoothly with no utilization of battery power.