| Termine | Definizione |
|---|---|
| aperture protection factor (Apf) |
Ratio of exposure to airborne contamination generated on the open bench, to the exposure resulting from the same dispersal of airborne contamination generated within the cabinet. EN 12469 |
| area of opening |
area limited by the two vertical and horizontal sides of the clear opening into the fume cupboard's workspace located in the plane of sash EN 14175-1 |
| area of the sash opening |
free area of the openings in the plane of the sash EN 14175-1 |
| aria di reintegro |
Aria immessa in un locale per compensare la quantità d'aria espulsa dalle cappe o da altri impianti di aspirazione. v. make up air |
| aria di ricircolo |
Aria adeguatamente filtrata espulsa dalla cappa e rimessa nell’ambiente di lavoro |
| As built |
A cleanroom that is complete and ready for operation, with all services connected and functional , but without production equipments or personnel within the facility |