Labconco PuriCare Procedure Stations 38100 User Manual
Page 21
Product Service 1-800-522-7658
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All PuriCare Series Procedure Stations operate using the following
principles:
• Filtration and retention of particulates by High Efficiency Particulate
Air (HEPA) filter(s)
• Laminar airflow
• Directional airflow
The major components are:
• The HEPA filter(s)
• The motor/blower to force air through the cabinet
• Cabinet air intakes (grilles), ductwork and air balance controls
HEPA Filters
HEPA filters are disposable, dry-type particulate filters. The filter material or
media is typically made of borosilicate microfibers formed into a thin sheet,
in a process similar to the production of paper. This sheet is folded, or pleated
to increase its surface area. The pleats are held in place by aluminum
diffusers or by beads of glue that add rigidity to the media pack. The pack is
then set into a frame, and sealed as shown in Figure 4-1.
The HEPA filter manufacturer establishes the efficiency of the filter by
challenging it with an aerosol of known particle size. The number of particles
that penetrate the filter are quantified, and this establishes the efficiency of
the filter. Thus, the filters used in the PuriCare Series Procedure Stations are
at least 99.99% efficient in removing particles 0.3 micron.