Ebola Is A Virus

With all the concern about Ebola one must remember the reason that Ebola, like many other dangerous pathogens, is a virus and in terms of size it is very, very tiny. Less than .012 microns in size. It requires the most efficient HEPA type filters to trap these tiny microorganisms, usually requiring a SULPA filter ( Super Ultra Low Penetrating Absolute ) HEPA filter.  This is one of the main reasons for concern when treating or being near someone who has the virus. It is easily dispersed and so tiny that many of the normal preventative gowns, masks and gloves may not be sufficient to protect everyone from coming in contact with the virus.

The use of HEPA filters for clean rooms and chip manufacturers has been around for years and hospitals require them for their surgery rooms and isolation patient care rooms. In the field, however, it is very difficult to establish truly isolated rooms or areas where those  infected with the disease can be effectively isolated from health care workers.

Pure Air Systems has been manufacturing HEPA based, fan powered  air filtration systems since 1985 and over the years more of their larger HEPA units have been shipped to the third world countries to establish some form of controlled isolation rooms and facilities to at  least try to  maintain some form of sterile  environment for treating the sick.

Now the military is establishing small isolation “tent style” portable facilities in Liberia and other near by locations to attempt  to isolate those infected with Ebola to both treat and contain the spread of the virus. These tents use HEPA filtered air and try to mimic the same type of isolation room style used in the US hospital facilities. Difficult to do but better than the alternative.

We need to remember that the most harmful of viruses and bacteria can not be seen with the naked eye so we tend to forget that being around people that are sick or infected can be problematic especially for those  individuals with weakened immune systems. Exposure doesn’t always have to be physical, it can very often be airborne so just being in the same general area with those infected can be an issue.

Pure Air Systems sells a wide variety of HEPA filtration systems ranging from 50 CFM to 2000 CFM using variable speed  controllers to allow for finite volume control to fit the specific application. While all the systems are designed as commercial units they are used by home owners and the general public on a regular basis. PAS is considered a leader in the field of HEPA  filtration and learning more about their  systems and capabilities can be a healthy choice.

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

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Designing On The Fly

Since March of 2013, I have been working on a re-design of a unit I built for PAS in 2006. The  portable HPS series HEPA filter  units I designed in 2006 were  used in small laboratory applications, homes and institutional operations. Like many new products I built, this one used the same commercial grade components and was not aesthetically pleasing from a consumer point of view…but it out performed everything else on the market in its size and capacity range. These units are still head and  shoulders above whatever new small commercial HEPA units are currently in the market.

The new APPAIS unit, as it will be called, is a variation on the HPS series theme and is designed as a Class II Medical Device. It will also be patented. The APPAIS unit and HPS unit used the same identical components, with one exception, and operate in the same basic manner. The major differences are in the housing design and final exit filter. The APPAIS unit is fabricated from aluminum and powder coated painted white. It also has two slots in the top housing where the prefilter ( inlet filter ahead of blower/motor) and exit filter ( after HEPA ) are located. Unlike the HPS unit, access to the prefitler and the new exit filter require no tools. They just slide out from the top where they are held in place with new slot covers.

Locating the prefilter and exit filter through slots was an idea that came to me as I was looking at the overall use of this system in the Pharmacy, Walmart, etc. market place along with typical medical facilities. Since the unit was a reverse blower/motor/HEPA filter design from the HPS, meaning the blower/motor was now on the negative side of the HEPA, replacement of the prefilter, the only filter protecting the blower/motor and electricals, would have to be changed much more frequently than in the HPS unit. This idea had some merit and actually made sense from a practical/performance point of view. There was one problem.

The fabricator of the new prototype housings was challenged to find a suitable slot cover so I worked with a local High School engineering class to design the slot covers using their Solid Works software and then produce the units on their 3-D Printer. This was the best and fastest solution to the problem and has allowed for rapid development of a part that is necessary to complete the project. Designing on the fly will create some unique challenges but also some creative solutions. Moving forward is always better than staying still or worse yet, moving backwards.

The first five pre-production units are now in the works and should be completed by the end of January 2014. Then they go out for trial testing to the FDA and other operations. Once they pass the final “usage” test the next step is introducing the new systems to the selected market.

For more information on Pure Air Systems please go to our website at: www.pureairsystems.com or follow us on Twitter @pureairsystems or call us at anytime on our toll-free number at: 800-869-8025.

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HEPA Filters As Good As A Flu Shot

This year the flu has hit the US very hard. I was up in Indiana for the Christmas Holidays and the majority of the friends and relatives we visited were either sick or just getting over the flu. This story was played out across the US and as of last report 47 of the 50 states had major out breaks of the flu. Coming back to Florida after the New Year I found that the vast majority of those Floridians that went up north to visit relatives were also suffering from the flu bug. Airborne viruses are very difficult to control.

The recommended medical approach to dealing with the flu is to get a flu shot in the summer or early fall to avoid the flu season which usually runs from October through March. And, for many people this preventative measure works. Although while it is possible to get the flu even if you have the shot, the symptoms are usually less severe and are short lived.

Since the flu virus is airborne, sub-micron in size and easily transferred from any infected surface, it is difficult to be in an enclosed structure that uses a forced air fan heating/cooling unit to not have contact with the virus when half the people in the structure are now infected. So when one person gets it..chances are others will as well. I believe many of us saw this take place over Christmas and New Years. Even wearing a mask may not help as the flu virus can live for short periods of time on many surfaces and then it is easily transferred to your hands and then eventually your face ( as we touch our faces up to 500 times per day).

Commercial grade HEPA filters are designed to remove, at a minimum, 99.97% of all particles 0.3 microns and larger with efficiencies approaching over 95% on particles smaller than 0.3 microns.  Viruses range in size from .006 microns to 0.5 microns in size. HEPA filters are the primary filtration media used by the CDC and other laboratories around the world that work with highly contagious and deadly viruses. They are extremely effective at protecting the technicians who work with these contagions.

Pure Air Systems has been manufacturing commercial grade, certified, HEPA and Carbon based air filtration systems since 1985. They are one of the leaders in offering a wide range of HEPA systems that can be digitally controlled to produce from 50 CFM to 2000 CFM. The PAS line of HEPA systems utilize the ECM variable speed motors that are rate 120/240v 50/60 Hz and can be used anywhere in the world. These units are fabricated from powder coated steel and use state-of-the-art digital control systems.  Since its inception, PAS has sold tens of thousands of its units to the residential, commercial, institutional, industrial, medical and specialty products markets in the North American continent and around the world.

The use of PAS HEPA systems in the residential market has shown over time that those homeowners have experienced fewer colds, allergies and flu symptoms than homeowners that just use standard air filters in their HVAC systems. Of course you can’t carry a HEPA filter around with you to work or the store, but you can significantly reduce the transfer of airborne viruses and allergens in your household or small office area with a very high degree of effectiveness.

For more information on the complete line of HEPA and Carbon based products please go to our website at: www.pureairsystems.com or visit us on Facebook or follow us on Twitter @pureairsystems. Of course you can always call us on our toll-free number at: 800-869-8025.

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Real Dust, Real Filters

There is a visual misconception that happens to most people when it comes to identifying what objects will do them harm. The normal train of thought is…”if I can’t see it, it won’t hurt me.” In essence, nothing could be further from the truth. Tiny, airborne and surface mounted sub-micron sized viruses and bacteria are invisible to the naked eye but can often be deadly to humans. Finely ground dust from any mineral source or pollen, ragweed and grasses range in size from 100 microns down to less than 1 micron in size. You can only see down to about 20 microns with the naked eye.

Ingestion of small amounts of tiny airborne pathogens and allergens over long periods of time can create severe and chronic health issues. And for the under 3 years, over 60 population the ratio of amount inhaled vs time may be shortened dramatically. Of course, for those individuals who are allergy sufferers or have weakened immune systems due to injury or cancer, even small amounts inhaled over a few days can create significant health challenges. While you can’t control the elements of the environment, you can control your personal environment.

Pure Air Systems has been manufacturing commercial grade, certified HEPA and Carbon based air filtration systems since 1985. For over 27 years PAS has provided high performance HEPA systems to reduce and remove these fine, harmful airborne particulate in a wide array of applications. Commercial, institutional, industrial, medical and residential customers around the world have relied on the performance of the PAS HEPA units to help them maintain a clean, healthy environment.

Air filters, the type you put in your heating/cooling air handler system, have been around for over 70 years. Originally made from metal strands they evolved to fiberglass media then cotton and now man made fibers. They became more efficient over time. However, they also became more resistant to air flow and created adverse air flow restriction problems for the heating/cooling systems. In order to actually remove the small, less than 10 micron sized particles with any efficiency ( up to 90% and greater removal) you require a HEPA media filter. The filters used in most HVAC systems today have an efficiency of less than 20% on these smaller, more harmful particles. And, some furnace filters have almost no effectiveness on anything smaller than 20 microns.

There is a reason that hospitals, clean rooms, surgery rooms, optical manufacturers, food processors, micro-chip companies, medical and commercial laboratories and many other environment-critical operations ONLY use HEPA filters or air filtration systems using HEPA filters. General duty air filters, electronic air cleaners and ionizers are basically useless when it comes to actually removing airborne particulate. The only way to deal with real airborne pathogens and allergens is to use HEPA filtration systems. Real Dust, Real Filters.

For more information on the complete line of  PAS HEPA and Carbon based air filtration systems go to our website at: www.pureairsystems.com. You can also follow us on Twitter @pureairsystems or like us on Facebook. Of course you can always call us at: 800-869-8025.

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Udder Futility

There are hundreds of thousands of blogs posted every day online and almost 90% of all newspaper and magazine articles are actually blogs or produced from blogs. You would think with everyone using computers with spell check software on which they are writing these blogs that they would actually use the software to check their spelling. And some do. Unfortunately the software doesn’t check for correct word usage.

Take the title of this blog for example. This is a term often used in sentences and usually means totally frustrated or not worth doing anymore. However, the way this title is written its’ meaning is somewhat different. Utter futility I can understand….udder futility must have something to do with a non-functioning or frustrated cow or goat, I guess….. Right church, wrong pew.

Companies often use this “play on words” approach to get your attention. It is, in many ways, a rather childish way to get your attention. But it works. If you have read this far you know what I mean. It would seem to me that if your product or service really has any value you wouldn’t stoop to using this type of marketing ploy. But we are.

Pure Air Systems has been making commercial grade, HEPA and Carbon based air filtration systems since 1985. Over the past 26 years we have had to continually convince the market that true, certified HEPA filters were vastly superior to standard air filters and anything calling itself an air “purifier.” The use of that term was really, and never has been, correct. Nothing actually purifies the air. You can heat it, cool it, blow it, suck it, stir it, move it and filter it. But not really purify it. That connotes making the air pristine and totally void of any impurities.

Yet, the term purifier continues to linger on. Why, we really don’t know. Maybe it just sounds like it does more…..purify versus filter. Maybe its like saying you want a women or man who is pure of heart rather than someone whom needs to filter what they say. Don’t know. But we use it.

The problem with using the term air purifier in front of the filtering device you are promoting, is everyone uses that term. Whether it’s an electronic air cleaner, ozone generator or ionic cleaner….they all use the word purifier some where in the title of the product. First of all none of the three devices just mentioned actually purify the air….in fact none of these devices do much to filter the air. Sorry if you bought one or sell them. We only tell it like it is. It is the Udder Truth.

For more information on the complete line of HEPA and Carbon based filtration systems please go to our website at: www.pureairsystems.com, or follow us on Twitter; @pureairsystems. You can also call us, toll-free; 800-869=8025.


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The Truth About HEPA Filters

Hepa filters have been around since the development of the atomic bomb. In fact, HEPA paper or HEPA media was created in 1941 specifically to remove the Alpha particles in the air to protect the scientists during the actual creation of the first atomic bomb in Los Alamos, New Mexico.

The development of the HEPA filter allowed for the complete capture of sub-micron particles. HEPA actually stands for High Efficiency Particulate Air or Absolute. Meaning it will absolutely remove particles of a certain size.

To be called a true HEPA filter, it has to meet a minimum capture filtration efficiency of 99.97% at 0.3 microns. To give you an idea of how small this is, a strand of your hair is approximately 100 microns in diameter. You can see particles only down to about 20 microns in diameter with the naked eye. The capture efficiency means that for every 10,000 particles in the air at 0.3 microns or larger that pass through the HEPA filter, only 3 particles may get through.

Of all the air filters available on the market today, including all the furnace and commercial HVAC filters, only HEPA filters are actually rated on their particulate removal performance. All other filters are now based on a MERV rating scale which gives a general capability based on a particle size range.

HEPA filters are the ONLY type of filter used in the following applications; hospital surgery  rooms, micro-chip manufacturing, pharmaceutical manufacturing, food processing, optics manufacturing, isolation rooms for pathogen contamination control, the CDC, Clean Rooms and Biological Laboratories to mention a few.

Over the years a large number of medical product manufacturing companies have latched on to the acceptance of HEPA as the best method for removal of bacteria and viruses and incorporated these filters into their systems. Today, HEPA filters are used in hundreds of commercial applications where the removal of small, sub-micron particles are required.

Unfortunately because of the acceptance of HEPA as THE filter media to use, many air filter companies and vacuum cleaner companies have incorporated the HEPA name into their filtering devices. In most cases these are HEPA type or HEPA like filters and not true, certified HEPA filters.

HEPA filters are extremely expensive when compared to a standard duty media filter; in many cases 15 to 20 times more expensive. In addition, in order for a true HEPA filter to be effective, it must be sealed tightly in the filter frame or holding frame.  To ensure this complete seal, HEPA filters use neoprene gaskets on the downstream side and are compressed into the frame to ensure a tight seal. In some cases a gel seal material is used to ensure no leakage around the filter itself.

Compared to general duty media filters and furnace filters, HEPA filters have an extremely high resistance or pressure drop. This means the HEPA filter has to be mated with a more powerful motor/blower system to overcome the additional static load.

Pure Air Systems has been using true, commercial grade, certified HEPA filters since 1985. It has more HEPA systems in the residential and commercial markets as packaged HEPA systems than any other filter company in the US. Today, Pure Air Systems uses a metal framed, high capacity, certified 99.99% at 0.3 micron filter in all of its units.

For more information on Pure Air Systems, HEPA filters and the applications that use HEPA go to our website at: www.pureairsystems. com

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H1N1 Capture

Like any airborne pathogen, the H1N1 virus is easily spread by contact from person to person in the air. While  it is always a challenge to keep from getting into contact with a carrier there are options available for reducing or removing the virus in small, enclosed areas.

The ability to remove the virus in say, a classroom or hospital ward is now possible with the use of the new commercial, hospital grade HPS series portable HEPA filtration units by Pure Air Systems.  These new high units (up to 500 cfm) can be placed anywhere in a room and provide from 3 to 10 air changes per hour. The new HPS units use a true, certified, scanned HEPA rated at 99.99% at 0.3 microns and smaller.

With the high incidence of H1N1 flu on college campuses and in the elementary schools, the use of HEPA filtration systems like the HPS series could help reduce the exposure of the flu to a number of students and individuals.

For more information on this HEPA unit and the other commercial HEPA systems offered by Pure Air Systems go to our website at: www.pureairsystems.com.

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