Cleanrooms Classification and validation

Clean Room validation

What is question. It is not clear.

clean room paricle counts?
microbial count?

See the new 2020 draft of EU Annex 1 in which both qualification and monitoring of clean room grades are described in detail

https://ec.europa.eu/health/sites/health/files/files/gmp/2020_annex1ps_sterile_medicinal_products_en.pdf

Do we have any guidelines for Room Classifications and its qualification requirements for Non-sterile area ?

what is particle count limit for class A area for 5 micron particle size?

https://ec.europa.eu/health/sites/default/files/files/gmp/2020_annex1ps_sterile_medicinal_products_en.pdf