The fermenter is full 48-72 hours after inoculation,
Standard:
Release a little strain into a clean empty test tube, and the strain accounts for 80% of the test tube. After standing vertically for 2 hours, the strain does not precipitate or float, but always remains suspended, indicating that the strain can be used successfully.
Store at 20-22 degrees 1-2 days, preferably use it up the same day. If you don't use it, cool it to 8- 10, and it can be stored for 7- 10 days.