There are various problems with pipettes in most laboratories. The following are summarized in the common problems found during the maintenance of pipettes:

1. Pipette seal ring wear and aging, resulting in poor air tightness, leakage, and poor repeatability.

2. The pipetting liquid is not cleaned in time, the spring is corroded and rusted, and the crystals block the piston chamber, resulting in insufficient liquid absorption and cross-contamination.

3. Due to improper operation, the pipette tip sleeve is deformed, and the alcohol is baked or even broken, resulting in the need to replace the accessories, and the use cost is increased.

4. If the range adjustment gear is damaged, it cannot be accurately adjusted to the ideal range, resulting in pipetting failure.

5. The cleaning and maintenance are not standardized. Add more sealing oil and break the piston during self-disassembly.

6. Unusual use range, resulting in deviation of pipetting accuracy.

7. The full scale and no vertical suspension are not used after use.

8. There is no regular maintenance and maintenance, resulting in shortened pipette life and so on.

Although pipettes are a common tool in the laboratory, for most sophisticated experiments, the use of problematic pipettes for pipetting is one of the important reasons for poor data repeatability and even experimental failure.