There are several problems that need to be paid attention to: 1, disinfection process of culture medium, and whether fungicides are added to culture medium. 2. Whether the tissue culture room carries out daily ultraviolet disinfection during the culture process. 3. It is better to choose test tubes for culture, which is more conducive to the disinfection of culture medium, and the mouth of test tubes is conducive to sealing and creating sterile space.

These problems (including mercury) should be given specific guidance by the tutor. Should you ask him?