Performance Testing - Containment and Product Protection Tests

	Downflow Velocity Profile Test
	Measure downflow velocity using a thermal anemometer Match the initial set points of the cabinet ą 5 feet per minute (2.5 cm/s)

	Inflow Velocity Test
	Several methods and location possible for this test Flow hood (DIM method) Modified sash opening (see manufacturers label) Hot wire over the exhaust HEPA filter Match the initial set points of the cabinet ą 5 feet per minute (2.5 cm/s)

	Sash/Window Seal Test
	No refluxing to the outside of the window wiper gasket and side seals

	Viewscreen Retention Test
	Airflow along the entire perimeter of the work access opening is inward

	Work Opening Edge Retention Test
	Ambient air does not pass on or over the work surface

	Downflow Smoke Test
	Airflow within the work area is downward with no dead spots for refluxing

	HEPA Filter Leak Test
	Determine integrity of HEPA filter Introduce an aerosol challenge to the cabinet Aerosol penetration through the filter not to exceed 0.01% of the upstream concentration

	Cabinet Integrity Test
	To pressurize all exterior surfaces from within to assure that the plenums, welds, gaskets or seals, do not leak to the room. Acceptance Holds pressure within 10% for 30 minutes No bubbles When is integrity testing performed Installing new units Sealing panels are removed for maintenance Cabinets are relocated Annually for A1 cabinets

	Site Installation Assessment Test
	This is a new test for the 2001 standard. The purpose is to verify that the hood is integrated properly in the facility. The following items are compared to the manufacturer/s specifications and NSF standards. Airflow alarms Sash alarm Exhaust interlocks Canopy connection