Question 1: Is it necessary to carry out flow visualizations for sterile workbenches during periodic requalification (what interval) or is an initial flow visualization sufficient? Question 2: Is there a regulation that describes what height the front screen of the sterile workbench should be in the working position and must a new flow visualization be carried out if this position is changed?

Yes of course, this is quite common. There are many different wall coverings. Please contact us directly so that we can advise you.