Dear Kelly,
Thanks for the explanation; it's all now clear as crystal.
Now they have TWO questions.
1) After the freeze dry process was complete last week; the user found there were some serum bottles fall down and some stoppers out of bottle.
Do you have any suggestion for this situation?
2).After cleaning up all spills; remove liquids from the chamber. Check it’s all dry in the chamber. However, for 8hours later there will have liquids near the right-side of equipment.