How to install the suction head of the pipette

Date:2022-10-25 11:13:22 Tuesday

Summary:In the laboratory where the pipette is frequently used, you can often hear the sound of tapping the suction head one after another, which adds a bit of music to the dull laboratory life. After a closer look, it turned out that the user was afraid tha......

In the laboratory where the pipette is frequently used, you can often hear the sound of tapping the suction head one after another, which adds a bit of music to the dull laboratory life. After a closer look, it turned out that the user was afraid that the suction head could not be tightly installed. After the suction head was installed on the pipette, he knocked it in the suction head box several more times, hoping to ensure the sealing of the pipette through this impact force. What's wrong with this operation?

First, under the impact, the suction head may deform and affect the accuracy of liquid transfer;
Secondly, the part of the pipette handle that contacts the suction head will become rough and difficult to ensure the sealing after many times of strong friction. In order to achieve good sealing, greater impact force is required, and the vicious cycle begins;
Third, the handle of the small range pipette is relatively thin, which is likely to become a fishing hook under the constant impact;
Fourth, sometimes the impact force is greater than the force that the pipette bears when it falls on the ground. Some precision parts in the pipette may be overwhelmed and strike at any time.