1, calibrate pH electrode and dissolved oxygen electrode.
2, tank sterilization. To match the medium into the tank, sealed as required, small fermenter (5 liters) can be placed in a large sterilizer tank sterilization (115 degrees Celsius, 30 minutes). Large fermenters (10 liters and above) using steam sterilization (120 degrees Celsius, 30 minutes).
3. When the tank is cooled down, place it on the fermentation table with the installation intact. Turn on the cooling water, turn on the power supply of the air pump, connect the ventilation pipe to start aeration, adjust the air inlet knob to make the appropriate amount of aeration, so that the tank pressure is maintained at 0.05MPa. Set the temperature, pH, stirring speed, etc., and in the determination of the rotational speed and the amount of aeration of the dissolved oxygen electrode for the slope of the calibration, the value of 100% p>
4, to be temperature stabilization, after the parameters are correct, will be shaken into the pre-seed. Start fermentation timing, and start recording various parameters.
5, after the fermentation is completed, clean the tank and electrodes, insert the pH electrode into the triangular bottle with 3M to be used, the probe of the dissolved oxygen electrode with a protective sleeve, save the spare.
1, home soilless culture method: seed selection, seed soaking, seed washing, and putting into seedling tray; Water it frequently, put it in the shade and keep it ventila