Using Air Filtration System As An Air Curtain

Air curtains are designed to be placed above a large door or opening to create an “air barrier” so to speak, that will keep the air from one side of the curtain from entering the other side of the curtain. This is accomplihed using a high volume industrial blower and fan with a fairly powerful motor. Usually 1/2 HP to 1HP. The air is produced by the fan and forced through manifold that is placed along the top edge of the door and extends the entire width of the door. The opening of the flow side of the manifold is very small in comparison to the air entry side of the blower. This design create a venturi affect that jets air downward at a very high velocity. 

Pure Air Systems has a series of fan-powered HEPA based air filtration systems that can be used as the main source of fan power for an air curtain while also maintaining a contaminant free air door. These HEPA air curtains are often used in food processing, medical product manufacturing, laboratories and medical facilities. The main advantage is the speed of entering or exiting a room without having to open or close a door. This is a real advangtage when the door opening is very wide and would require either double doors or a horizontal sliding door. In addition, you could have more than one person moving throught the opening at one time. 

Pure Air Systems has been manufacturing HEPA and Carbon based air filtration systems that are fan-powered and with all metal housings since 1985. These units range in air flow volume from a low of 50 CFM to 2,000 CFM. The PAS units come standard with a true, scanned HEPA filter, Carbon Filter and Prefilter. All components are made in the USA. For more information on the complete line of HEPA and Carbon filtration systems please go to our website at:  http://www.pureairsystems.com    or call us on our toll-free number at:  800-868-8025.

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HEPA Filters. High Efficiency Particulate Absolute

HEPA filters were developed in the early 1940’s during the creationg of the atomic bomb.The use of radioactive materials in the making of the bomb created extreme health hazards for the technicians and engineers that had to handle this type of material. Due the extremely small size of the radioactive particles ( Sub-micron in size ), readily available air filter media like furnace filters, were totally useless in reducing the levels of radioactive particulate. They needed a filter material that could absolutely remove and capture these tiny particles. 

After trying a number of materials a process using a wet laid paper type material infused with tiny pieces of glass was used to develop a very dense material that was capable of filtering out these tiny sub-micron particles. The paper like material was formed into an accordian style form with pieces of aluminum sandwiched beteween each folded layer to protect the paper-like media as it was relatively fragile and could abrade by rubbing on itself.

The filter pack was placed inside a square medtal housing and was glued in place. The outside parameter of the metal housing had a neoprene type gasket so when it was placed in a sheet metal duct it would compress the gasket to form a leak-tight seal. These filters had an initial efficiency of capturing 99.97% of all particles 0.3 microns and larger and as it got dirtier its efficiency increased. The use of this HEPA filter allowed the technicians to work in a safer environment culminating in the eventual creation of the two bombs used on Japan to end WWII.

For more information on the complete line of HEPA filtration systems offered by Pure Air Systems please go to our website at:  https://www.pureairsystems.com    or call us on our toll-free number at: 800-869-8025. 

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The Best HEPA Filtration System Line-Up In The Market Today

Founded in 1985, Pure Air Systems offers one of the most complete line-up of HEPA air filtration systems anywhere. In fact, there are now only three companies in the world, including Pure Air Systems, that offer fan-powered, high-performance true HEPA filtration systems in the world. 

PAS currently uses variable speed drive motors in all of its filtration systems and that now includes the HPS series portable units. Unlike the older style induction motors, the variable speed drive motors can be programmed to run at any speed and are capable of ramping up if the pressure drop across the HEPA filters increases. This allows for a constant flow of air ( measured in CFM ) through the filtration systems over the life of the HEPA filter.

The all-metal housing units also include a prefilter and carbon filter along with the scanned HEPA filters. There are three base units, the 600HS, 1200HS and 2000HS units along with the HPS portable series. The housings for the base units are split into two sections, with one section containing the blower/motor and the other section containing the filters. By modifying the sections we can offer straight through units, or left or rignt 90 degree angles and also change the type of filters that are put into the units. This design technique allows us to offer a unti to fit any configuration whether the units are installed as along with existing duct work or as stand alone systems.

For more information on the complete line of HEPA based air filtration systems please go to our website at:  https://www.pureairsystems.com       or call us on our toll-free number at: 800-869-8025.

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UV Lights and Ozone Generators Do Not Filter The Air

Covid-19 has reignited the air filtration market with new ( old technology ) being offered to the public as the panacea for removing viruses from the air. Unfortunately, these old technologies are being regurgitated as the panacea for keeping you safe from airborne viruses such as Covid-19, et al.  UV lights are good for illuminating finger prints on glass if you are a forensic scientist searching for a perpetrator but this light does very little to destroy airborne bacteria and viruses. For UV light to have any affect on airborne contaminants, the particles need to be exposed for a long period of time ( from 1 to 10 minutes). Since most UV lights are installed in HVAC systems the speed of the air passing by the UV light somewhat defeats the purpose of using the light in the first place.

Ozone Generators have been around for more than 40 years and were used originally to reduce odors in commercial applications. Ozone is made up of 3 Oxygen molecules and will easily give up one of its molecules when it comes in contact with another gaseous molecule and changes the chemical nature of that molecule. This is how it reduces odors by simply changing the chemical nature of the odor producing molecule. Ozone also attacks carbon based objects and humans are basically carbon based forms. For airborne particulate, Ozone is not effective as it does not have any capture mechanisms to reduce the level of the particulate. Again, particulte would have to be in contact with the Ozone for long periods of time to have any affect at all.

Mechanical air filters, which include all media air filters including HEPA filters, are the only mechanism available to remove and capture airborne bacteria and viruses. This is why all Hospitals, clinics, laboratories and other medical facilities use HEPA or HEPA type filters to protect the occupants from viruses such as Covid-19. Even the lesser efficient air filters that are used in homes and offices that  have some minimal effect on removing viruses are better that using UV lights and Ozone generators. 

For more information on these types of air purifiers and air filters, please go to our website at:   https://www.pureairsystems.com    or callus on our toll-free number at: 800-869-8025. 

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Making Central Air Filtration Part of Your New Home Construction

For many years people would add central vacuum systems to their new home construction process as this was both less expensive and more efficient than trying to add it after the home was constructed. While there are fewer central vaccum systems being installed today ( use of robots and less carpeting ) the advantage of a using a central system is still very effective.

Today, it is possible to add a central, whole-house HEPA air filtration system to your home both during and after construction. Pure Air Systems has been selling their 600HS PLUS, fan powered, commercial grade HEPA filtration system for homes, offices, hospitals, commercial buildings and industrial applications since 1985. This uint can be attached to any ducted, forced air HVAC unit with some minor ducting modificatioins and simple wiring. 

The system is designed to run anytime the HVAC unit runs and is really well suited to working with the newer variable speed drive HVAC units. The 600HS comes with a prefilter, carbon media filter and a true, certified HEPA filter. The advantages in having this type of medical grade air filtratoin system are many and, in this day of Covid-19, this type of system can be extremely beneficial in reducing the levels of airborne viruses in your home along with other allergens and contaminants.

For more information on this system please go to our website at:  https://www.pureairsystems.com   or call us on our toll-free number at: 800-869-8025. 

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Un Masking Covid -19 Size Does Matter

Wearing a mask during the current pandemic has been accepted by and also rejected by large portions of the US population.Some of reasons are political, some are irrational and some are based on science. The latter being the more logical rationale.

It seems that the, “What you don’t see won’t hurt you”, mindset has taken over our ability to feel threatened by the virus. Yet, this virus like all airborne viruses has no concience or cares little about your ability to see it. You can only see particle sizes down to about 20 microns with the naked eye and this virus is about 0.005 microns in size which makes it only visible using an electron microscope. When someone who has Covid-19 talks, coughs, sings or laughs they are expelling millions of sub-micron particles into the air, some as droplets some as fine, invisible mist. The closer you are to that individual and the longer you stay in close proximity to that individual the larger the concentration of the virus you will breathe in. Unless of course you are wearing a mask.

The use of any covering over your mouth and nose is by far much safer than wearing nothing at all. Maks will prevent you from getting high concentrations and also minimize the amount of the virus you may transmit if you are infected. It is, in essence, the human thing to do.Covid -19 will continue to be with us for a long time just like the other Covid viruses for which many of us get inoculated each Fall to reduce our chances of getting the Flu. And, like the Flu this virus is always changing and the longer it stays around the more virulent it becomes and the less exposure you will need to become ill.

Pure Air Systems manufacturing a complete line of HEPA based, fan powered filtration systems for the residential, commercial, institutional and medical markets. We are currently producing a large number of HEPA based air filtration systems for the medical and commercial markets to assit them in removing Covid-19 in many of their operations. PAS is as major supplier of HEPA systems throughout North America.

For more information please contact us via our website at:  https://www.pureairsystems.com    or call us on our toll-free number at: 800-869-8025.

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Covid-19 A Different Type of Media

THE MEDIA is getting a lot of attention these days and depending upon which side of the aisle you sit your position about this pandemic is dependent upon which media outlet you watch or listen to. The term “media” also refers to the type of filter materials used in air and liquid filtration. In the case of these types of materials, they are not subject to opinions or bias. Filter medias have a specific protocol they must pass in order to have a rating for a certain efficiency of particulate removal of certain sized particles.

Pure AIr Systems, founded in 1985, has been making fan powered HEPA based air filtration systems for the commerical, medical, industrial and institutional markets with a very high degree of success. The HEPA media used in their systems is tested under very stringent test protocol to meet or exceed 99.99% removal of particulate 0.3 microns in lager and approach 95% on particulate smaller than 0.3 microns. 

The efficiency of this type of media doesn’t care where the particles came from or how they were generated or even the color and texture. It is a filtration media that is used globally and recognized as the best available filtration for removal of airborne bacterial and viruses. It is important to listen to the science not the hype. 

For more information on the complete line of HEPA and Carbon filtraion systems please go to our website at:  https://www.pureairsystems.com .   

 

 

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Covid-19 HEPA Masks

The Corona Virus pandemic has brought out a cry for protective gear, masks, respirators and ventilators not to mention HEPA based air filtration systems to maintain positive pressure rooms in make-shift hospitals. HEPA filters are made from special paper-like materials that are extremely dense and designed to capture a very high percentage ( usually 99.99% or greater ) of sub-micron particulate. These filters are used in surgery suites, laboratories, chip manufacturing, and any place where airborne particles ( bacteria and viruses ) are present. 

With the Covid-19 pandemic there is a race to provide any type of mask for the first responders, medical personnel and now the general public. This demand has brought out a number of individuals and groups making masks ( or printing them ) out of various materials; mostly cloth of some kind. However, some are offering HEPA masks that look like a regular cloth type mask. True HEPA masks worn by first responders are PAPR masks. Positive Air Pressure Respirators.These masks have true HEPA filters in their design and also have fans to assist in pulling the air through the HEPA filters. These masks are battery powered. Without the assistance of the fan you would would have difficulty pulling air through the mask with your own lungs as the HEPA paper has extreme resistance compared to standard surgical masks. 

The N-95 masks are similar to MERV 8 air filters. They are good for 95% of particles in the 3.0 to 10.0 micron range. Certainly much better than cloth but not as good as HEPA media. The reason this is important is that viruses, such as the Covid-19 virus, can be as small as .0005 microns in size. As a comparison, your hair is about 100 microns in diameter. This sub-micron size makes Covid-19 airborne and allows it to pass through standard mask materials. This is why this virus is so deadly. 

For more information on HEPA filters please go to our website at:  https://www.pureairsystems.com   or call us on our toll-free number at: 800-869-8025.

 

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Coronavirus and HEPA Filtration

Viruses are very tiny microbial particles. They are less than .012 microns in size and are easily transmitted by air or touch. The masks that people are wearing to protect themselves from this virus. Unfortunately this is just not the case.

In order to remove viruses from the air you need some very special HEPA type filters. These are called SULPA filters. This stands for Super Ultra Low Particulate AIr or Absolute filters. These are used by the CDC and other medical clinics around the world. Most of the masks now worn by people for protection are not capable of removing any viruses and most bacteria. They are good for removing large dust particles. HEPA masks are available but very expensive and hard to breathe thru as the HEPA paper is very dense and creates a lot of air resistance. 

Pure Air Systems has been making HEPA based, fan powered air filtration systems since 1985 and has a number of HEPA filter systems that are designed for residential, commercial, institutional and medical applications. Their portable unit is certainly one of the best on the market for reduction/removal of harmful airborne particulate including bacteria and some viruses. Their systems can be attached to existing HVAC units or used as stand-alone systems. 

For more information on the complete line of HEPA based air filtration systems from Pure Air Systems please go to our website at: https://www.pureairsystems.com   or call us on out toll-free phone number at: 800-869-8025.

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Pure Air Systems To Be Highlighted In Pharmacy Practice Magazine

Pure Air Systems has been making commercial grade, fan powered HEPA based air filtration systems since 1985 and has seven different model and size configurations to fit any commercial, medical, industrial or residential application for reduction and/or removal of sub-micron airborne particulate. Recently, GOTO RX, a company based in Ontario, Canada that specializes in pharmacy clean rooms and other products for the pharmacy industry, recently purchased a 2000HS HEPA filtration system from Pure Air Systems to tests it’s effectiveness using a smoke test by the College of Pharmacists, Air Quality test protocol. The unit was mounted in the ceiling of two clean rooms with short duct runs to a number of inlet points to capture the smoke that was generated by the testing equipment.

William Fretwell, President of GOTO RX provided this description of the smoke test and the results. The 2000HS was tested at a flow rate of 43% of maximum ( 2000HS can move up to 2,000 CFM ) with a room  air change rate of 45 air changes per hour which is above the 30 changes per hour normally required for this type of clean room. So there was lots of spare capacity. During the smoke test where a special chemical is used to generate smoke that is extremely fine with much of it invisible to the naked eye, the particle counter found no smoke passing through the Pure Air Systems HEPA unit. The 2000HS created a clean room environment in both rooms with a Clean Room rating of Class 6, which is 10 times cleaner than the required standards. William Fretwell commented that, ” most hospitals don’t have anything up to this standard”.

As a result of the successful test results, GOTO RX is planning on publishing an article for Pharmacy Practice Magazine with the title, “The New Clean”. It is important to note that PAS has been using their HEPA based filtration systems for over 35 years in a wide variety of clean room type applications with superior results. For more information on the complete line of HEPA and Carbon based filtration systems please go to our website at: https://www.pureairsystems.com   or call us on our toll-free number at: 800-869-8025.

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