This standard specifies test methods for designated classification of airborne particulate cleanliness and for characterizing the performance of cleanrooms and clean zones. Performance tests are specified for two types of cleanrooms and clean zones: those with unidirectional flow and those with non-unidirectional flow, in three possible occupancy states: as-built, at-rest and operational.
DS/EN ISO 14644-3:2006 history
2006DS/EN ISO 14644-3:2006 Cleanrooms and associated controlled environments - Part 3: Test methods