▎ 摘　　要

NOVELTY - The tip has a main body formed with an outlet. A thin film is coated in an inner surface of the main body. The main body is detachably arranged in a leading end of a pipette. The thin film is made of graphene and hydrophobic material. The hydrophobic material is provided with zeta potential of -50 to +50 mV about solution of potassium chloride. The hydrophobic material is selected from polydimethylsiloxane. Thickness of the thin film is formed in range of 1-500 micrometer. USE - Pipette tip. ADVANTAGE - The tip reduces charge quantity of droplet by using the grapheme, so that electric charge of the droplet can be minimized. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a pipette tip.