• 6 ft Models 1589,1579
Calculation:
• Average Downflow Velocity = Sum of all measurements / Number of
readings
Acceptance:
• 58-68 FPM
Description:
• Determines the integrity of the downflow and exhaust filters.
Equipment:
• Aerosol Photometer, or equivalent
• Aerosol Generator, or equivalent
Method:
1. Allow the cabinet to operate for approximately 20 minutes.
2. Remove the work tray and protective covers, as appropriate.
3. Introduce the aerosol from the generator in the center rear of the work
area, using a tee fitting to evenly distribute the aerosol.
8-8 1500 Series A2
Thermo Scientific
Section 8
Certification Testing
Testing Information
(continued)
6
5.5
5.5
6
6
5.88
5.88
5.88
5.88
5.88
5.88
5.88
5.88
5.88
5.88
6
inches
5.7 for
8 in
opening
models
33 points
6
5.5
5.5
6
6
5.88
5.88
5.88
5.88
5.88
5.88
6
inches
5.7 for
8 in
opening
models
21 points
HEPA Filter Leak Test
Filters that can be
Accessed and Scanned