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ULPA Filters

A reliable source for Air Filter information and leading Air Filter Companies & Manufacturers.

They are not a specific type of air cleaner filter, but rather a specific filtration standard which many types of filters may meet. ULPA filters are among the highest efficiency rated filters available. The implementation of this level of air filtration is crucial as ULPA filtration has the ability to stop the spread of airborne infectious disease and toxic agents. Read More…

ULPA Filters ULPA filters are ultra-low particulate air filters that are qualified as being 99.9995% efficient in removing particles 0.12 micrometers or larger such as dust, pollen, mold, microbes and more from a given air stream. Like HEPA air filters, or high-efficiency particulate air filters, ULPA filters remove extremely small particles from the air in order to purify it.
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Leading Manufacturers

Wakeman, OH  |  866-488-9399

Duraflow Industries is the premier aftermarket and OEM supplier of various filtration products. We feature a complete line of filters for applications such as air scrubbers, absorption of thousands of organic compounds, drinking water filtration, and waste water abatement. Our just-in-time production techniques allow us to maintain production flexibility and meet fast turnaround times. From industrial to residential, DuraFlow has you covered.

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Duraflow Industries $$$

Moline, IL  |  800-447-4009

Here at Smith Filter Corporation we are the manufacturing experts with over 75 years of experience. It is our mission to accommodate all of your needs. These functional items are beyond compare and we have the talent to successfully create the most unique and innovated products.

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Smith Filter Corporation $$$

Sauget, IL  |  800-541-3478

Universal Air Filter Company is a custom-designer and made-to-spec producer of NEBS certified air filters. We offer several types of media and electronics cooling air filters for broadband / datacom, EMI/RFI shielding, superior dust retention, fan air filters, and flame resistant filters.

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Universal Air Filter Company $$$

Carol Stream, IL  |  630-384-0400

Founded over 50 years ago, we have been providing exceptional air filters since our inception. We are dedicated to ensuring that our customers are receiving the highest quality products and services in the industry.

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Air Filter Engineers, Inc. $$$

Denver, CO  |  800-496-7666

MCR inventories a large stock of Cleanroom Fan Powered and Ducted Air Filters. The Mac 10 FFU is known for being the quietest filter available and has been tested below 5O dBA with a rated flow of 90 FPM. Its modular design fits conveniently into 2`x4` to 2x2 T-Bar drop ceilings, and with a low profile of less than 13" it permits installation into tight ceiling spaces. Contact our company today!

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Modular Cleanrooms, Inc. $$$

Montreal, QC  |  800-270-6904

Filtertech is an established manufacturer of a wide range of high quality filter cartridges since 1987. Filtertech filter cartridges provide true depth-efficient filtering, and are designed to handle most chemical environments and temperatures. We offer a broad range of filter media. These filters are available with core covers or extended cores.

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Filtertech $$$
placeholder image Duraflow Industries Smith Filter Corporation Universal Air Filter Company Air Filter Engineers, Inc. Modular Cleanrooms, Inc. Filtertech

Hospital and healthcare organizations often employ ULPA filters in isolation, intensive care, and operation units as well as biological safety cabinets. Other industries such as aerospace, military, animal handling, biopharmaceutical facilities, heating, refrigerating and air conditioning utilize these filters as they offer "absolute filtration", meaning as close to particulate free air as is possible with current technologies.

Pre-filters in the form of foam filters or electrostatic filters can be used to remove larger particulates thereby increasing the efficiency of ULPA filters as they can then focus on smaller contaminants. Pre-filtration may extend the useful life of these precision filters for several years.

In general, ULPA filters are made of spun-hooked fibers rolled into paper-like material which is then formed into panels. The panels are often pleated to increase the surface volume of the filter without requiring a larger frame. Porosity is one of the most important considerations concerning the selection of fibers for a ULPA filter as their main goal is removing as many particulates as possible.

Measured in pores-per-linear-inch, or ppi, lower porosity signifies lesser air flow, but more filtration. Cellulose acetate, ceramic, carbon, glass fiber, cotton and polyester are all low porosity fibers commonly used alone or in combination to create filter panels. These panels are placed into frames or housing units either by the manufacturer or, in the case of separately sold components, by the user.

Housing units are built of sturdy materials to secure the filtration panels. Frame materials include aluminum, plastic, steel, Teflon and modified acrylics among others. The wide range of use for ULPA filters means many options and therefore many factors to consider when selecting an appropriate filter. Porosity, as previously discussed is one factor, while efficiency, filter length, height and width as well as ply are also important.

Though the filters themselves may become prone to shedding of particles, out-gassing, and limitations with regards to resistance to chemical deterioration, improvements in treatments and construction continue to reduce filter decline. Polypropylene, for example, is added to many fiber blends to enhance chemical resistance.

ULPA Filter Informational Video