Pipette suction heads can be divided into standard and low adsorption suction heads. They can be further subdivided into sterilization and filter suction heads. In order to ensure sterility, sterilized suction heads must be packed in boxes, and bagged suction heads are easy to be punctured in the process of transportation and storage, resulting in biological contamination, so it is unable to ensure complete sterility! If you're still using a sterile suction in a bag, don't tell you where the trash can is!

The filter element suction head is often used in molecular biology experiments. The filter element is generally made of PE material, which is used to block the aerosol and some biological molecules, protect the pipette and avoid pollution.