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Air Filtration Articles

Selecting Proper Air Filter Efficiencies for Commercial Buildings

June 30, 2011

Introduction The information provided here is intended to assist those responsible for making technical decisions to improve air filtration in commercial buildings. These would include…

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Controlled Environments – Explained

June 30, 2011

When someone mentions a “controlled environment” most people think of a cleanroom or operating room. In actuality, there are 15 general categories of controlled environments1…

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Selling in the New Era

June 30, 2011

Make no mistake about it. It is tougher than it used to be for the filter sales professional. It is a different environment than even…

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Effectiveness of Germicidal UV Radiation for Reducing Fungal Contamination within Air-Handler Units

June 29, 2011

This is a summary of research completed on the fungi growing on insulation within air-handling units (AHUs) in an office building and levels of airborne…

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The Role of Filtration with Building Security in the Post 9/11 World: Is Filtration the “Silver Bullet?”

June 29, 2011

“9/11” CHANGED THE WORLD. The early reactions to the events surrounding and following 9/11 were similar to the “Chicken Little” of nursery rhyme folklore fame.…

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How Many Types of HEPA Filters Are There?

June 29, 2011

According to the Institute of Environmental Science and Technology, (IEST) with regard to performance, there are 6 types – A, B, C, D, E &…

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Review of Eurovent 4/10 – 1996

June 29, 2011

In Situ Determination of Fractional Efficiency in General Ventilation Filters The purpose of the EN 4/10 research paper was what many of us in the…

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Clear on Clearance

June 29, 2011

According to Encarta – World English Dictionary, “clearance” is defined as “removal of unwanted objects” and “permission for something to happen.” Both definitions are pertinent…

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MERV Filter Models

June 29, 2011

For Aerobiological Applications Air Media article published Summer 2002. by W.J. Kowalski, PE, Ph.D. and William Bahnfleth, PE, Ph.D., The Pennsyvania State University Technical input also…

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