HEPA filter - 3 / 8 Pages

Scan Testing
Manufactured to the Highest Quality Standards
Standard Capacity
57/s" deep - 150 FPM @ 1.0 in. w.g. 111/2" deep - 260 FPM @ 1.0 in. w.g.
HEPA Efficiencies - 99.97% and 99.99% minimum efficiency on 0.3 micrometer particles.
ULPA Efficiency - 99.999% minimum efficiency of 0.3 micrometer particles and 99.9995% on 0.1 to 0.2 micrometer particles (11V2" deep only). For ULPA and MEGA efficiencies up to 99.999995% on .10 to .20 micrometer particles, use AstroCel II LPD Series minipleat filters.
Leak Testing
Filters that pass the overall efficiency test may still have minute pinhole leaks. AstroCel filters can be factory scanned to assure there are no pinhole leaks. Scanning detects these leaks which are repaired before the filter is released for shipment.
AAF uses a proprietary static scan test with a challenge aerosol of non-toxic, polyfunctional alcohol that leaves no residue on the media.
For pharmaceutical and those applications requiring PAO, AAF offers scanning with this material using a light scattering photometer.
Scan test showing leak indicated by a smoke trail.
High Capacity
24" x 24" x 111/2" deep - 2000 CFM @ 1.4 in. w.g.
HEPA Efficiencies - 99.97% and 99.99% minimum efficiency on 0.3 micrometer particles.
Selected nuclear grade AstroCel filters have been qualified by the Department of the Army in accordance with ASME AG-1. They are used in critical applications such as the Department of Energy and nuclear power plants. The qualification tests subject the filters to a series of rigorous environmental conditions and must
Scanning with light scattering photometer.
meet rated efficiency.
Overall Efficiency Testing Two methods of overall efficiency testing used: PAO Test
This has been the industry standard for many years. It is conducted using a forward light scattering photometer. The filter is challenged with poly-alpha-olefin (PAO). By
Laboratories Classifications
UL Class 1
AstroCel l filters are classified UL Class l by Standard 900 (except those made with non-fire retardant wood cell sides).
UL 586
This standard ensures that each filter is individually tested at the factory. Additionally, representative filters are tested by UL to ensure that they provide HEPA level filtration, after being subjected to the following conditions:
measuring the upstream and
AAF PAO test facility.
downstream concentration, the filter efficiency can be calculated.
Laser Test
The filter is tested with a laser spectrometer using polystyrene latex (PSL) spheres. Filter efficiency is determined by comparing the upstream and downstream concentrations. Efficiencies down to 0.10 micrometers can be determined.
High moisture (90% R.H.)
High
temperature (700°F/371°
Low temperature (27°F/-3°C)
UL also subjects the filter to a spot flame test (1750°F/954°C). A numbered UL label certifying that the filter meets Standard 586 can be applied to the filter.
Media Testing to Meet Exacting Quality Standards
Every roll of media is carefully checked for a specific set of physical and performance characteristics, including:
AAF laser spectrometer test.
E
Օ Resistance
Thickness  Weight
Tensile Strength Օ Binder Content Water Repellency
HEPA filter
  1. P. 1

    AstroCel >I >High Efficiency Particulate Air Filters (HEPA) Ultra Low Penetration Air Filters (ULPA)Available with Antimicrobial Better Air is Our...
  2. P. 2

    iiii||i!|i||!llllll!llllilllfl mu AstroCel® I HEPA and ULPA filters are the most efficient air filters commercially available....
  3. P. 3

  4. P. 4

    AstroCel l filters are available in a variety of construction materials and cell side configurations to fit AAF and competitive framing systems or sealing...
  5. P. 5

    Bond Separators The media pack is thoroughlysealed to the inside of the cellsides with a variety of adhesivesthat prevent bypass leakagearound the pack....
  6. P. 6

    iiinii!ii||i|l!|||i||j||||||||ll!ll|l!!lllP AstroCel® I Selection AstroCel l filters are available in a wide variety of standard sizes and...
  7. P. 7

    Save on New AstroCel HCX Installations ΕFewer filters required.Less space required for filter bank.ՕNo transitions.Faster installation....
  8. P. 8

    AstroCel I Extend AstroCel ή Life with Prefilters No HEPA filter installation should ever be operated without prefilters.AAF has a broader...
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