Primary Engineering Controls and
Laminar Airflow Systems
PEC should be turned off when not in use to reduce wear and maintenance of
HEPA filter
False
Should always be operational
If turned off needs to runs for at least 30 minutes before compounding
Laminar Airflow Workbench
(LAFW)
1) Describe how air gets filtered
2) Is flow horizontal or vertical
3) Can be use for HD Compounding?
Laminar Airflow Workbench
(LAFW)
1) Room air -> filter -> HEPA filter -> work zone
2) Horizontal most common but can be either
3) No HD. No environmental or personal controls
Describe the zone of turbulence
Area behind any item (e.g., vial, IV bag, syringe) on the hood where sterile
airflow from the HEPA filter is interrupted; the zone or area is thereby
contaminated; sterile parenteral products should not be prepared within a
zone of turbulence
