83
Flanders - Foremost in Air Filtration
Corporate Headquarters, St. Petersburg, FL
General
Flanders offers a complete line of Alpha Cell HEPA
Filters in two efficiencies to meet the needs of criti-
cal applications where HEPA filtration is required.
Individual testing, rigid quality control and modern
assembly methods are used to ensure confor-
mance to specifications. Alpha Cell HEPA and
ULPA Filters are either UL 900 Class 1 or Class 2
listed.
Testing
Flanders individually tests and certifies each Alpha
Cell HEPA Filter to meet the customer’s require-
ments for resistance and efficiency (penetration) at
the filters nominal rated capacity. This information
appears on a test label affixed to the filter. When
used with correctly selected and installed mounting
frames or housings, Flanders Alpha Cell HEPA
Filters will easily pass an in-place validation test to
determine the overall system efficiency.
HEPA FILTERS
Each Alpha Cell HEPA Filter has a minimum effi-
ciency of 99.97% on 0.30 micrometer size particles
when tested at rated capacity on a Q-107
Penetrometer. Filters rated for 1000 cfm or less are
challenged with an approved nearly monodis-
persed oil aerosol of 0.30 micrometer size. Filters
rated for flows greater than 1000 cfm are tested
using a polydispersed oil aerosol. By measuring the
upstream and downstream concentration of these
particles with a light scattering photometer, the pen-
etration can be determined and the efficiency can
be calculated.
Scan Tested HEPA Filters
Each Scan Tested Alpha Cell HEPA filter has a min-
imum efficiency of 99.99% on 0.30 micrometer par-
ticles. Scan testing is in accordance with Section
6.2 of IEST-RP-CC034.1, HEPA and ULPA Filter
Leak Tests. In the scan test, the filter is challenged
with a high concentration of an approved oil aerosol
or PSL (Polystyrene Latex Spheres). The media
pack and pack-to-frame seal is scanned using a
photometer or particle counter to ensure that there
are no leaks greater than .01% of the upstream
concentration at 100 fpm face velocity.
Higher Efficiency ULPA Filters
Flanders can provide Pureform® and Separator
Style ULPA Filters with efficiencies up to 99.9995%
on 0.12 micrometer size particles. Please contact
the factory for more information.
Alpha Cell
HEPA Filters
See component chart on page 83.
Typical applications for
Alpha Cell Filters include:
• Hospitals
• Biomedical
• Pharmaceutical
• Biotechnology
• Genetic Research
• Universities
• Laboratories
• Food Processing
• Photo Processing
• Semiconductor Fabrication
• Industrial Processing Systems
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