These filters are the default filters for 2000 cfm air scrubbers. The High Capacity AstroCel I is constructed in the same fashion as the standard AstroCel I. The filter is made of water-proofed, fire-retardant fiberglass media formed into a pattern of pleating. The media is covered in foam bonding into a filter frame made of 3/4" fire retardant particle board. Unique to the High Capacity model is a special design shallow crimp separator that allows for the use of more filter media. Gasketing is available on the upstream, downstream or both faces.
AstroCel HEPA filters are used primarily in “cleanrooms” and “clean benches,” areas which require the very highest levels of contamination control. High Capacity AstroCel I filters can be used in place of standard HEPA filters to obtain higher air flow at the same resistance or for lower resistance and longer life at the same air flow.
“H”-level filters are scan tested at 99.99% efficiency to insure the filter is free from pin hole leaks. AAF uses a proprietary static scan test with a challenge aerosol of non-toxic, polyfunctional alcohol. For pharmaceutical and those applications requiring PAO, AAF offers scanning with this material using a light scattering photometer.
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