Pipette for hours on end—these ergonomic pipettors maintain even flow with just the push of a button. With a set speed, you can carefully monitor the quantities aspirated and dispensed. Choose from six aspirating and dispensing speeds—dispense as fast as 5 ml per second. Choose a higher speed when working with viscous liquids. An LED display shows your speed and battery status. To ensure contamination-free pipetting, the nose on these pumps is autoclavable.