Pipetting was performed throughout almost all of the experiments. If there is a problem in the pipetting process, it will directly contaminate the sample, affect the experimental results, and even lead to the failure of the experiment. In order to avoid the above situation, users will pay special attention to the performance of pipette when buying pipette tools, and even save money and spend a lot of money. But in the choice of pipette suction head, attention is far from enough. In fact, the pipette head, an unremarkable disposable consumable in the laboratory, comes into direct contact with the liquid sample. It can be said that the quality of pipette has a decisive effect on the pipetting process.

The adaptability of pipette nozzle is a problem that users are concerned about more and more. Why? Because not all suction heads can be used on the corresponding range of pipettes of any brand, customers must pay attention to the adaptability of suction heads when purchasing suction heads. We can discuss the adaptability of desorption head from the following aspects:

1. The specificity of pipette head: some brands of pipette can only use their own standard pipette head, some can't.

2. Adaptability of suction head: It is common for a pipette to use more than one suction head, but the pipette effect is not the same after installing different suction heads.

3. The range of the suction head and the pipette should be adapted to: the volume of the general suction head should be greater than or equal to the maximum range of the pipette. For example, 200L suction can be used for pipettes with ranges of 20L, 100L, and 200L;