Thermo Scientific 1300 Series, User Manual

Page: 64 / 130

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.
4. If desired, and if the cabinet has not been used with hazardous
materials since an effective decontamination, the upstream
concentration can be measured. If desired, connect the photometer
sample hose to the appropriate (supply or exhaust) test hose
connection (exhaust test hose - right side / supply test hose - left side)
from under the work tray.
5. Using either the appropriate upstream challenge measurement or
calculated challenge value, set the photometer accordingly.
6. Scan the downstream side and perimeter of the filter as prescribed in
YY 0569-2005.
Acceptance:
• Filters scanned – 0.01% of upstream concentration at any point
Method:
1. Set up as in Steps 1 through 5 above
2. In the duct, downstream of the filter, sample in accordance with YY
0569-2005.
Acceptance:
• Filters not scanned – 0.005% of upstream concentration
1300 Series A2 8-11 Thermo Scientific
Section 8
Certification Testing
HEPA Filter Leak Test
Filters that can be
Accessed and Scanned
Filters that cannot be
Accessed or Scanned