Labconco Purifie Horizontal Clean Benches 3970424 - Manual (Page 28)

Chapter 5: Appropriate Applications for Your Vertical Clean Bench
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Listed below are suitable applications for HEPA filters.
HEPA Filter Applications, Suitability and
Guidelines

Procedures traditionally performed on an open bench where a clean Class 5 air
environment is now required.

The HEPA filtered enclosure provides product protection from particulate
matter. Because air from the Clean Bench enters from the room during
operation, this enclosure should only be used for operations requiring sample
protection from environmental contamination.

HEPA filters are only effective for entrapment of particulate matter. The
surface of the HEPA filter is fragile and should not be touched. Care must be
taken to avoid puncturing the HEPA filter during installation. If you suspect
that a HEPA filter has been damaged, DO NOT use the enclosure. See
Chapter 6 for Replacing the HEPA Filter.

The HEPA filter will gradually accumulate airborne particulate matter from
the room. The rate of accumulation will depend upon the cleanliness of the
room air, and the amount of time the enclosure is operating. With normal
usage, the HEPA filters will last two to five years before requiring
replacement.