Commonly used pipette suction heads can be classified according to different criteria, the following are some common classification methods:

Classification by material:

Ordinary plastic head: Generally made of polypropylene (PP), which is the most common head material. Polypropylene has good chemical stability, can withstand most commonly used laboratory reagents, and the cost is low, suitable for conventional pipetting operations, such as absorption of aqueous solutions, buffers, etc.

Low adsorption head: On the basis of ordinary polypropylene material, after special treatment, so that the inner surface of the head has a low surface energy, reduce the adsorption of proteins, nucleic acids and other biological macromolecules, thereby improving the accuracy and repeatability of pipette. It is often used for the removal of biological samples, such as enzymes, antibodies, DNA, etc.

Classified by adaptive pipette type:

Single-channel pipette head: specially adapted to single-channel pipette, there are different specifications, such as 10μl, 20μl, 100μl, 200μl, 1000μl, etc., to meet the needs of different volumes of pipette. The shape and size of the single-pass pipette head are precisely matched to the gun head portion of the single-pass pipette, ensuring good sealing and pipette accuracy.

Multi-channel pipette suction head: suitable for multi-channel pipette, the common multi-channel pipette has 8 channels, 12 channels, etc. The design of multi-channel pipette head is to realize the simultaneous removal of multiple samples in one operation and improve the experimental efficiency. It is often used for experimental operations of porous plates such as 96-well plates and 384-well plates, such as enzymelinked immunosorbent assay (ELISA) and gene sequencing sample preparation.