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Labconco XPert Filtered Balance Stations 3962622 User Manual

Page 35

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Chapter 5: Using Your Filtered Enclosure

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HEPA Filter Applications, Suitability and Guidelines

Biohazardous materials and hazardous solids to protect only the operator and
the surrounding environment.

Weighing of powders.

Release of particulates using a HEPA filter.

Powder or particulate procedures traditionally performed on an open bench.

The HEPA filtered enclosure provides personal and environmental protection
from particulate matter, hazardous powders and biohazardous materials.
Because room air is drawn through the enclosure during operation, this
enclosure should not be used for operations requiring sample protection from
environmental contamination.

HEPA filters are only effective for entrapment of particulate matter, hazardous
powders and biohazardous materials. Manipulations that generate gases or
vapors, i.e., toxic chemicals or radionuclides, require the use of a HEPA and
carbon filter in combination. Otherwise the enclosure should be ducted to the
outside. 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 or using a Bag-In/Bag-Out
Disposal Bag.

The HEPA filter will gradually accumulate airborne particulate matter from
the room and from work performed in the enclosure. The rate of accumulation
will depend upon the cleanliness of the room air, the amount of time the
enclosure is operating, and the nature of work being done. With normal
usage, the HEPA filters will last two to five years before requiring
replacement.

Each filtered enclosure is provided with a HEPA filter. For powders and
particulates follow the HEPA Filter Bag-In/Bag-Out procedure in Chapter 6
for disposal instructions. For biohazardous materials, follow the
Decontamination Procedure in Chapter 6 for disposal instructions.


Odor Control Carbon Filter Applications (sold as an accessory)

Release of low concentrations of vapors effectively adsorbed or treated in
carbon based filters.

Treatment of low-level carcinogens or suspected carcinogens. (See Chemical
Carcinogens in Chapter 5)

Procedures that may have traditionally been done on the open bench (low
levels only).

Odoriferous chemicals that are an unpleasant nuisance.

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