A pipette works by creating suction, either manually or electronically, to draw liquid into the pipette tube and then dispensing it with precision. In manual pipettes, the user controls the suction with a bulb or a plunger, while in electronic pipettes, a motorized system controls liquid aspiration and dispensing. When the plunger or bulb is depressed and released, liquid is drawn into the pipette tip via capillary action. The volume of liquid is determined by the position of the plunger or the marked graduations on the pipette. When dispensing, the liquid is expelled by pressing the plunger or activating the electronic mechanism, delivering an accurate volume. Some pipettes are designed for single-use, while others are reusable and must be cleaned after each use.
