Comparison of the advantages and disadvantages of pipettes and pipettes

1. In terms of comfort in use, pipettes are better than pipettes. Nowadays, hand-held pipettes have increasingly incorporated ergonomics in their appearance design, making the pipette more convenient to use and more user-friendly.

2. In terms of measurement accuracy, the accuracy of pipettes is much higher than that of pipettes. The current micro-volume pipettes can measure up to 0.1 micro-upgrade, which can completely replace pipettes to engage in demanding experimental activities. In fact, for many demanding experimental activities, the accuracy of the pipette cannot meet the requirements.

This mainly comes from two aspects:

1)the pipette is generally made of glass, and the thermal conductivity of glass is higher than that of the plastic shell of the pipette. That is to say, the external temperature will be directly transferred to the liquid in the pipette, causing its volume to decrease. change;

2)The glass tube wall of the pipette itself has a thickness, and the glass cannot completely avoid the refraction of light during the transmission process in the glass. Therefore, the height of the liquid observed from the outer surface of the pipette is different from the actual height of the liquid .

These two points are designed based on different pipettes. Therefore, in terms of comfort and measurement accuracy, pipettes are stronger than pipettes. Everyone uses a pipette a lot and is familiar with it, which created this misunderstanding.