The Question posed on LinkedIn.

“Can any body guide me how to perform the air shower qualification in potent drugs manufacturing? Is there any guidance for the same? Which test needs to be covered during qualification? ”

My advice:

Having worked in sterile production facilities, I’d consider an air shower a bad idea (increased particulates, impact on pressure differentials, ineffective removal of static particles (even creation of static particles) etc risk of forcing particles through PPE onto operator, cross contamination of surrounding de-gowning area/airlock).

I’ve found an old (2002) article that might help you with any URS and subsequent validation activities you develop:
https://www.alnmag.com/article/2002/12/how-do-air-showers-fit-contamination-reduction-plan

There are also two old (1999 and 2002) references at the end of the (linked) article.