HEPA, Carbon and AHU Pre Filters

HEPA air filters are made from very tiny glass fibers that are made into a tightly woven paper. This creates a filter consisting of a multitude of very small sieves that can capture extremely small particles, including some biological agents. Once trapped, contaminates and particles are not able to flow back into circulation, due to the highly absorbent pores of the HEPA air filter. High efficiency particulate air (HEPA) is originally called high-efficiency particulate absorber but also sometimes called high-efficiency particulate arresting or high-efficiency particulate arrestance, is a type of air filter. Filters meeting the HEPA standard have many applications, including use in medical facilities, automobiles, aircraft and homes. The filter must satisfy certain standards of efficiency such as those set by the United States Department of Energy (DOE).

Carbon Filters

What is Activated Carbon Filter

Activated carbon air filters consist of a vast system of pores of molecular size. These pores are highly adsorbent, forming a strong chemical bond/attraction to odorous, gaseous, and liquid contaminates, especially organic chemicals/compounds.

Activated Carbon Filter Facts

  • Activated carbon air filters trap odors and chemicals in highly absorbent granules (or pores), which look like a hard scrub brush.
    Activated carbon is a charcoal that is treated with oxygen in order to open up millions of tiny pores between the carbon atoms, resulting in a highly adsorbent material.
  • Activated carbon filters were found to removed 60-70% of airborne ozone compared to filters without activated carbon. These filters removed harmful VOC’s (Volatile Organic Compounds) by 60-80%, and formaldehyde by 25-30%.
  • According to a report released by the Centers of Disease Control, Dept. of Health and Human Services, and the National Institute for Occupational Safety and Health, activated carbon is an excellent absorber of most organic chemicals.

HEPA and Carbon Filters

Sl.No Features Specifications
1 Available Filter types Box and Blanch
2 Available Sizes in feet’s (LxB) for        Mini Plate Filters H=75mm 1×1,2×2,3×2,4×2,1.5×1.5,2×1.5,3×1.5,4×1.5
3 Available Sizes in feet’s (LxB) for D-Plate Filters H=100mm 1×1,2×2,3×2,4×2,1.5×1.5,2×1.5,3×1.5,4×1.6
4 Efficiency of media 99.99%
5 Particle Allowed range 0.3 µ
6 Material of Construction Aluminum, MS Powder Coated, SS 304
7 Protection Both sides should be covered by metallic powder coated grill
8 Other than standard size filters Yes, as per the Req.

AHU Pre Filters

Sl.No Features Specifications
1 Available Filter types Box and Blanch
2 Available Sizes in mm (LxB) and H=50,75,mm and as per Req. 300×400, 600×400, 800×400, 600×600 as per Req.
3 Efficiency of media 99.99%
4 Particle Allowed range 5 µ  and 10 µ
5 Material of Construction Aluminum, MS Powder Coated, SS 304
6 Protection Front sides should be covered by Aluminum grill
7 Other than standard size filters Yes, as per the Req.