| Test | Reference |
|---|---|
| Particle counting and classification, at rest and in operation | ISO 14644-1 |
| Air velocity and airflow volume | ISO 14644-3 |
| Air change rate | ISO 14644-3 |
| Pressure differences | ISO 14644-3 |
| HEPA filter leak test (aerosol and photometer scan) | ISO 14644-3 |
| Recovery time | ISO 14644-3 |
| Active microbial air sampling | EU GMP Annex 1 |
Clean rooms
