How can we ensure that the liquid in the container can reach the set sterilization temperature?

When sterilizing culture medium, how can we ensure that the liquid in the container can reach the set sterilization temperature?

The temperature in the culture medium must lag behind other places in the cabinet during the heating process. OSR puts the mobile probe in the cabinet into the culture medium and sets the following program: When the culture medium sterilization program is selected, the system will automatically select the mobile probe as the temperature control point. Only when the temperature of the culture medium rises to the sterilization temperature can the sterilization program be entered and the F0 value can be accumulated to ensure the sterilization effect.