What are the minimum points of a good automated suction head? A good suction depends on concentricity, taper, and the most important point is adsorption.

1, let's talk about the taper: if it is better, the match with the gun is very good, and the suction will be more accurate;

2, concentricity: concentricity is the suction nozzle of the suction head and the vertical circle at the link between the suction head and the pipette seems to be the same center, if not the same center it indicates that the concentricity is not good;

3, finally, the most important one is our adsorption: adsorption and the material of the suction head, if the material of the suction head is not good, it will affect the accuracy of the pipette, resulting in a large amount of liquid retention, referred to as hanging wall, resulting in pipette error.