Knowledge

It plays a better airtight role, and the inner cover and bottle are tightly buckled, which not only reduces the entry of air and water vapor

burning and flame sterilization: burning is mainly used for sterilization of inoculation tools, and complete sterilization can be achieved by burning on the flame.

When in use, the pipette should be cleaned and drained naturally.

The acid burette is used to measure the liquid that corrodes the glass, and the basic burette is used to measure the liquid reagent that corrodes the rubber tube.

In order to facilitate shaking and prevent overflow outside the tube during boiling, the liquid drug contained in the glass test tube shall not exceed I / 3 of the volume.

Graduated pipette is a precision liquid measuring instrument. Pay attention to the following points in use

After cleaning and disinfection before use, whether the Petri dish is clean or not has a great impact on the work, which can affect the pH of the culture medium.