1. If not in use, adjust the range of the pipette to the maximum value of the scale to keep the spring in a relaxed state to protect it.

2. Regularly clean the pipette by using soapy water or 60% isopropanol, then rinse with distilled water and let it dry naturally.

3. Before high-temperature disinfection, ensure that the pipette can adapt to high temperatures.

4. Calibration can be performed by repeatedly weighing distilled water in an environment of 20-25 degrees Celsius.

5. Check for any leakage during use. The method is to suck up the liquid and suspend it vertically for a few seconds to see if the liquid level drops. If there is a leakage, the reasons can be roughly as follows:

a. Is the gun head compatible;

b. Is the spring piston functioning properly;

c. If it is a volatile liquid (as many organic solvents do), it may be a problem with saturated vapor pressure. You can first suck and release the liquid a few times, and then transfer it.