Pipette gun is a kind of pipette, which is often used for the pipetting of small or trace liquids in the laboratory. The specifications are different. The pipette tips of different specifications are matched with different sizes of pipette tips, and the shapes produced by different manufacturers are also slightly different. Different, but the working principle and operation are basically the same. Pipetting is a precision instrument, and the holding time should be careful to prevent damage and avoid affecting its range.