Uvairx - How nature cleans

bjbj,(,( Hello, I am looking forward to presenting to you today about environment conditioning, not air purification. There is a big difference between conditioning our environment and air purification. My name is Allen Johnston. I come from a background in defense engineering, and as the screen shows, I have worked with Raytheon a large defense contractor, worked on the egis missile cruiser, a number of different defense programs and I am pretty excited about that career and the number of lives it as saved over the years. But we are faced with a bigger threat today with our indoor environment and I am excited that we have a strategic defense system that we can attack this problem with . #00:01:02.0# We have gone to some of the best researchers. Kansas State University's Dr. James Marsden is an expert in food safety. When you think about food safety, you are thinking about surface contamination. Meat does not get contaminated on its own, it gets contaminated by touching contaminated surfaces. That is why we have to cook hamburger all the way through. You don't want to get a rare hamburger. Dr. Marsden has tested this technology extensively against some of the most dangerous pathogens, like avian influenza, SARS virus, e.coli, listeria. Then the University of Cincinnati, one of the top researchers in the word in terms of air-born contaminates. Dr. Sergey Grinshpun runs the department of the center of health related aerosol studies at the University of Cincinnati, and he was able to prove that we are able to reduce the number of microbes in the air as well as drop the particles out of the air; which is a double whammy because if we can keep them from coming into our mouths and noses, we have helped ourselves significantly but to be able to breakdown those organisms as well. The University of Missouri's Dr. Leila Riley had done some testing on the norovirus, which is a terrible virus. We hear about it in relation to cruise ships, but it is a problem everywhere. It is just exacerbated in the cruise industry. #00:02:32.6# The IAQ problems of today is not a new problem. It has been around for roughly 50 years. It all changes when we started to change the way we build our homes. We sealed up our buildings. Mold and mildew infestations are at an all time high. The EPA says that outdoor air is 5-10 times better, meaning that the indoor air is 5-10 times worse than outdoor air. A lot of people do not realize that. When you think about what is outdoors, the cars, the factories that are putting pollution into the air. And to think about the outdoor air with all of those problems is cleaner than indoor air. It starts to make you realize that we have to deal with this problem and come up with solutions. Then we talk about problems in hospitals - air born staff, MRSA, methosilin resilient form of staff. Then we have other types of pathogens, and they are at an all time high. Nosocomial infections, these are infections that people contract after they get to the hospital. They contract these within the hospital. This claims the lives of some 120,000 people every year. This is more than twice the number of people who are killed each year in auto accidents. #00:03:59.4# So what is the industry doing to solve this problem. we see things like passive technologies. Like filters, UV lights. There are a number of problems with these systems. First of all, it is impossible to get all of the air to them. Think about a filter - we are asking for all of the particles in the room to transport themselves through the air to the filter. The problem is the real major issues, in terms of particles, the ultra-fine particles do not move easily. So we can't get all of the air to the filter and certainly not all of the particles. UV lights, they are effective on surfaces. But they are marginally effective on moving air. Ventilating means we are going to bring outdoor air, in. If you think about the fact that the EPA says outdoor air is 5-10 times cleaner than indoor air - that makes a lot of sense. The problem is you have to heat it and cool it. That is expensive. We can't afford to go back to the pre-1970's days when we really started sealing up houses and creating this indoor envelope like we have today. This has created this problem. #00:05:17.6# What do we do? We work with filters. We try to suck the air through them. Does that work? Maybe. The problem is - do you see that little red balloon in the upper right hand corner of the screen? Even if you take a balloon that is filled with helium and floating around the room. You will not see it get pulled into the return air duct. We say that we turn the air over in a room - maybe 2-4 times per hour. Yet the reality there are major pockets of air throughout the room than are not getting pulled into the return air at all. It is not a good way to handle it. Even with electrostatic filters that are able to pull ultra-fine particles out of the air, those particles are never making it to the filters. #00:06:07.6# Then we have things that are on surfaces. How are pathogens like mold, bacteria, and viruses going to make it from the surface to the filter? It is not going to happen. #00:06:29.3# So to adequately address these problems, we have to tackle them at various levels. We talked about particles because that is what filters deal with. You also have to talk about pathogens. Mold, bacteria, virus, fungi - we also have to deal with VOC's, also known as volatile organic compounds. These are the ten's of thousands of chemicals that we find in our indoor environment that are reeking havoc on health. Also known as gas phase contaminates. We have to deal with these problems at the source. We can't expect the problem to come to the solution. We have to bring the solution to the problem. #00:07:11.6# The solution is looking at the way nature does it. We see the way things work outside. We see the fact that we have a thunder storm and that nature is able to clean the air. Just in the normal course of every day, the UV from the sun is interacting with chemical compounds and having an effect on our indoor air quality. That is an active approach. It is proactive, not reactive. The solution is coming to the problem! I often talk about - a funny thought - what is going on outdoors? Does nature have a giant vacuum cleaner that is sucking the air out...and cleans it? Of course not. The pollution is being dealt with using a host of compounds that nature has created. That is what we are going to focus on. A solution of active technology. #00:08:21.2# #00:08:21.2# I want to introduce you to an unique photocatalytic oxidation or PCO technology called photo-hydro-ionization, or PHI for short. Developed by RGF, PHI actually found its roots in the early days of NASA, going back decades ago. NASA had a dream of building a space station, allowing men and women to work in space and stay there for months and years at a time. The International Space station has been in orbit for a long period of time. Well more than the one decade that they thought it would be. And there still adding to it today. Think about that for a moment. You just cannot open a window and let in fresh air in space. They had to deal with the things on the spot. Interestingly NASA had an issue with ethylene gas. They had to be able to grow plants and plants give off ethylene gas just like we give off carbon dioxide. Ethylene gas is bad for plants just like carbon dioxide is bad for us to breath. Interestingly, PHI technology can breakdown, called molecular disassociation, with this ethylene gas - it breaks down to water vapor and carbon dioxide. This solved a real problem for NASA. But another benefit was the same technology also could breakdown thousands of other chemical compounds. To be able to clean and keep the space station clean on an ongoing basis. That is the beauty of this technology. It is used by NASA, perfected by NASA, and now available to commercial and residential applications. #00:10:22.8# PCO technology has been recognized by ASHRAE, the american society of heating refrigeration and air conditioning engineers. David Branson wrote an article that discussed this new technology that encouraged ASHRAE to start some research on this. Basically saying that photocatalytic technologies has the ability to reduce the amount of fresh air we bring into buildings, providing the same benefit as fresh air. This is not surprising because photocatalytic technologies replicate nature's process that occurs outdoors. By doing that, ultimately we can reduce the amount of cost of heating and cooling. It is going to be years before ASHRAE finishes their research. But we are encouraged by the direction they are going. #00:11:28.5# Ion Technology - this is the first strategy that we are going to talk about. Ion technology - why are we concerned about particles first of all? If we take a look at this graph on the screen. #00:11:42.7# We see the basic particle sizes. Along the bottom is the particle size in microns; from "boulder sized" - 100 microns, to all the way down to .001 microns. They are particles that you can only see with an electron microscope. At 100 microns, you are at the size of a human hair. which is like the size of a house compared to a pin head down at this side. Now we find the net area of 100 microns, pollen and bacteria and skin cells, dust mites feces, mold spores. Those are important to remove from the air and standard HEPA filters can take care of those. When you get below a micron or a half a micron, then you need an electronic air cleaners that have to charge particles to be able to trap them onto grids. The problem is below that half micron, which are the most dangerous particle sizes, those are the particles that do not move well with air. WE need another method. This is where unipolar ionization comes in. By charging particles, we can cause them to attract and clump. To gain mass and become bigger in size so a particle that may be .01 microns, like viruses - the polio virus falls at about .025 microns - too small by far to be moved with air. This particle can float in the air for weeks and months and even years. Those can gain mass can begin moving in particle size till we get into this area where they can be trapped by a filter. Filtration is important. But filtration cannot solve the problem on its own. Unipolar ionization, being able to charge particles is the key. #00:13:43.8# The unique PCO system that UVAIRx has is called photo-hydro-ionization. Let me give you an introduction. PHI consists of an energy source. WE talked about what happens outside. The sun provides UV light. The energy source to be able create the reactions that clean the air. Our energy source is a broad spectrum UV lamp. It is not your typical germicidal UV lamp. This is a unique, specialized for this purpose. We have a special sleeve that protects the lamp. The lamp has mercury....the sleeve encapsulates the bulb if it ever breaks. This is important for safety. There is a metal mesh that circles the bulb that provides optimal surface area and lastly we coat it with a special hydrated coating that is quad-metallic, hydrophilic in nature. We will get more into that in a moment. It is very unique. NASA used, and what the space station uses is very basic. This is taking that technology many steps forward in terms of efficiency and effectiveness. And it is called photo-hydro-ionization. #00:15:09.9# A lot of times, as soon as I show that previous slide, and talk about the UV light - people immediately think about germicidal UV. Germicidal UV lights have been sold by the 100's of millions. They are sold around the world to deal with indoor air quality issues. They are at best, marginal on that issue. Let me explain why. Here is a typical UV lamp that would go into an HVAC system. The air flows through it. The pathogens that are in the air come in proximity of of the bulb. But there are a lot of "ifs"! If the mold, bacteria, viruses, those pathogens, come into the air stream, make it to the return air, or even get to the lamps. The second thing - if the time exposure is enough - you have to have a certain dose of energy on the pathogen to make it inactive. That is difficult. THe airflow is very high across the lamps. They are traveling at a high speed. Unless the pathogen comes within, literally within less than an inch - typically at best they get a sun tan. Let me use an analogy, something we are all familiar with - a candle. If you were like me, when we were young, we would put our hand in a candle flame - passing back and forth - you didn't get burned. If you hold your hand over the flame for more than 2 seconds, you will get burned. In the same way, a pathogen can go by the UV lamp and not be effected by it. If we get that pathogen to slow down, or stop - then we definitely have an effect on it. Ultimately, inactivating - we don't use the word kill, because we are technically disrupting RNA and DNA, the organism is not dead - from our standpoint, the thing is dead. It cannot reproduce and that is what we care about. #00:17:29.6# The germicidal UV light works on the inverse square law, which means the UV intensity - let's say it is at 100% at one inch - if you go to 2 inches, or double the distance, you go down by a factor of 4. If you double it again, you go down by another factor of 4. At 8 inches, you are down below 2%. You can see as you move away from the bulb, the intensity drops off significantly. That is the problem. #00:18:06.5# Let's look at a structure using photo-hydro-ionization - a technology that puts out a plasma that covers the entire house. If we have a unit in the ducting, it is able to effect the entire indoor environment. Whereas a UV unit only effects the ducting - and I am generous by saying that it effects the entire area in the duct. In reality it only effects a small area next to the UV bulb. This is a huge difference. The fact that we have a UV bulb, the only similarity between that and a germicidal UV lamp is that they both are ultra-violet bulbs. We don't use our bulb to inactivate pathogens. We use it as an energy source to run a catalytic reactor. That is the key. If you look at the space we are able to cover with one unit - we can cover the entire area in this small house - 16,000 cubic feet. The UV bulb only covers less than one cubic foot - and that is being generous. There is a huge difference between the two. Germicidal UV lights are effective on stationary objects #00:19:32.9# One area that they are frequently used is on the A coil, or the cooling coil in an HVAC system, whether it is a home or commercial facility. Here is a picture of one of those coils. You have the ribs of aluminum that make up the heat/cooling exchanger - the thermal transfer. You want it to be clean like this shows. This lamp that is shown right here is shining on the area and it keeps it clean. But as you move away from the lamp, you see all kinds of stuff that is attached to it. That is mold. The mold will grow to the point to plug up the fins. This cuts down the efficiency significantly - causing you to use more energy. Germicidal UV is effective on stationary objects, but not at all effective on moving air. #00:20:36.3# When applying germicidal bulbs on an A coil, you have to use a number of them. This picture shows it quite accurately. The air flows up and through the coil. In order to adequately cover this, we need 6 bulbs. Even with 6, you get mold growth on the perimeter. 6 bulbs minimum on a residential application. In a commercial facility, you could use dozens or hundreds to cover all of the cooling coils in the facility. It gets into a lot of money. It does work, and it only effects this area. It does not effect anything away from the cooling coils. #00:21:32.7# We are going to talk about the photo-catalytic-oxidation process; which is different than germicidal UV bulbs. If we take a look at the photo-catalytic reactor. Inside of it is the UV bulb that provides the energy to run the reactor - creating what are called AOP's or advanced oxidation products. This beam of light shines on the photo-catalytic target that surrounds the UV bulb. We ultimately know that it is made up of atoms. WHen you understand atomic theory, understand that there are electrons that are revolving around the nucleus of the atom. These electrons need to be broken off, break the bonds that hold them onto the atom. We want to promote them to the conductance band, as it is termed. Literally, as this beam of light hits the catalytic surface, billions of electrons are shooting off per second. This is called the formation of electricity. This is not the kind of electricity you can plug into. It is electricity in the air. You will hear a term called plasma, or non-thermal plasma. And this is how it is created - it is the charges that are coming off. There are benefits to this. We create a plasma in the air, and we leave behind electron holes. The basis of this material is titanium dioxide - we use this because the bonds that hold the electrons to the atoms are so strong, one of the highest levels of bonds that exist in any molecule, once the UV light overcomes that and promotes the electron to the conductance band - it leaves behind an electron hole. Let me tell you, an atom does not like that. It wants to get that electron back, and it does it when anything comes into contact with the surface. If anything comes into contact with the surface, it pulls an electron back in. Whatever that molecule is that comes to the surface, it goes through a process called molecular disassociation, because now it is missing an electron, there is an imbalance and things fall apart. Water vapor is the most common. When water vapor comes in contact with the surface, molecular disassociation makes hydrogen and oxygen - which makes all kinds of different oxidative products - which are oxygen and hydrogen based. That is the science of what is happening at the atomic level. #00:24:35.4# Water is important to the process. When water vapor comes into contact with the catalytic surface, there is a molecular disassociation that takes place. For that reason, the coating is hydrophilic in nature - meaning it attracts water vapor. We want that. It doesn't matter - we can operate in any environment. The ideal environment is with a humidity of 40-60%. Above 60%, there are problems with mold - we never want to see that. This system can take a humidity of 100%. These systems are placed down stream from humidifiers, and they work very well. If you are in Arizona - where humidity is below 10% - it still works, but we get better results at the higher humidity levels. Interestingly, higher humidity means more biological problems. We have more to fight it with here! If we have humidity levels under 10%, we have less biological issues and where not putting out as much plasma. But it offsets each other. I think we can understand that. #00:25:59.3# Photo-hydro-ionization consists of a quad-metallic coating. That coating - four metals - made up primarily of titanium dioxide. Be definition, the encyclopedia will tell you when TiO2 is exposed to UV light of a wavelength below 385 nanometers, and ours is a broad spectrum lamp running from 400 to 200 nanometers, in the presence of water vapor, two highly reactive substances are formed - hydroxyl radicals and a superoxide ion - which is a type of oxygen with one extra electron. With that, there is also silver and copper which speeds up the reactive process and rhodium that converts nitric oxide to nitrogen and oxygen. These four metals together are able to make an efficient, fast reacting process than a standard photo-catalytic reactors that have a UV light and TiO2 only. This is the unique thing about the system UVAIRx has. We have a unique quad-metallic reactor. We have a unique UV bulb. This is not just any old photo-catalytic system, this is optimized to get the best results possible. #00:27:25.7# We have talked about the formation of AOP's - one of them is hydro-peroxides. A hydro-peroxide is simply vaporized hydrogen peroxide. Think of a squeeze bottle of hydrogen peroxide that we are familiar with. We have all used it on a wound - to be able to clean it - it bubbles up and kills the bacteria. When you take water vapor, add oxygen to it, and run it through the photo-catalytic reactor - and as this molecular disassociation process occurs, the oxygen atom forms with the water vapor to form H2O2. Hydrogen peroxide is simple one oxygen atom added to water, yet is an effective biocide and works very well. The amount of hydrogen peroxide is minuscule. And a lot of scientists look at that and say it can't do anything. When you combine it with all of the other things we are doing, it is very effective at being able to keep things at bay. Hydrogen peroxide is used in high levels in hospitals to clean rooms, but that is for unoccupied space. This is the same type of hydro-peroxide we find outdoors in a clean environment. The kids of outdoors we love to take a deep breath of. It is low level, just like oxygen at low levels is important. Yet oxygen at high levels is dangerous. Everything we are talking about is at natural, low levels. I want to stress that. #00:29:19.1# For those who are interested in the chemistry, Dr. Bolton who teaches at the University of Calgary, wrote a book on Photo-Catalytic Oxidation and photolysis of ozone and how the formation of hydrogen peroxide happens - and from that, the formation of hydroxyls. Starting with ozone - adding energy - the breakdown, you get oxygen with one oxygen atom molecule. And that oxygen atom forms with water vapor to form hydrogen peroxide. Hydrogen peroxide comes into contact with energy from the photo-catalytic process, you receive that 2 OH molecules. OH is hydroxyls, the most powerful oxidant know to man. It is very short lived, because as soon as it comes into contact with any biological or organic, it oxidizes. There is definitely science behind it. #00:30:33.7# As we look at things like the oxygen atom coming together to form a diatomic oxygen, we see the formation of the super oxide ion. It is a very reactive, advanced oxidation product with organics. We have talked about hydrogen peroxide gas, hydroxyls, super oxide ions. #00:31:09.2# There are others that we see - ozone is one, but ozone has to be controlled carefully. Ozone can be used in high quantities to reduce biologicals, but it is not safe to breath. Ozone at low levels is found outdoors. The problem is being able to control it. This system is not about trying to generate ozone, but it does take advantage of ozone in the air. As the previous two slide showed from Dr. Bolton shows how ozone can be used in the breakdown to get an oxygen atom needed to form the hydro-peroxide that forms the hydroxyl molecule. If we look at the different oxidative powers - hydroxyls have the highs levels at -2.8 electron volts. Ozone is right up there as well. Hydrogen peroxide is a little lower. Chlorine, which we think of as a strong oxidant is even lower. We are creating not only hydrogen peroxide in the air, we are creating hydroxyls, superoxide ions - we are also creating a non-thermal plasma. #00:32:45.1# This non-thermal plasma or discharge palms at atmospheric pressure is a well documented mechanism for bacterial inactivation. It creates positively and negatively charges cluster ions. The positive cluster ions are water vapor that are surrounding a hydrogen atom that is positively charged. The negative cluster ions surrounds the superoxide ion we talked about. This is what it looks like - if you can imagine all of these water vapor molecules surrounding a hydrogen atom as well as a superoxide ion. So we have a positive cluster and negative cluster ion. Bacteria collide with these ions and react on the surface to generate highly reactive OH radicals. So we go from this to creating hydroxyl radicals because the interaction that occurs with the water vapor. It is very effective with substances and microbes with surface proteins. Those are the things we want to go after. The surface proteins include the pathogens we are most concerned about - mold, virus, and bacteria. #00:34:08.0# If we take a look at the safety of this, because one of the things I am frequently asked about - Allen, if this is so effective, it would seem like it would be dangerous to be around. If it is able to breakdown molecules of bacteria, mold, and virus - what about the molecules of my skin and the molecules in my airway, my lungs, my sinuses? What about those? This is interesting, the non-thermal plasma does cause fragmentation of the surface membrane leading to a malfunction and death of the pathogen cell. Here is a picture of one that has been exposed to a non-thermal plasma . The key is that they only effect bacteria surface. The surface itself. There is no damage to the cytoplasmic protein or the DNA. If we effect the DNA, there is trouble, Unlike using radiation or UV that can damage the DNA, this does not do that. The problem with using radiation or UV - that it damages DNA, it causes cells to become cancerous. We are all aware of the importance of using sunscreen and not exposing our bodies to UV rays outdoors any more than is necessary. Unlike UV radiation, this non-thermal plasma is able to break the cell membrane, but not damage the cytoplasmic porting or the DNA itself. That is very important. #00:36:09.7# When we look at the photolysis of VOC's, remember we talked about the importance of dealing with particles, then we talked about the importance of dealing with pathogens - molds, bacteria, and viruses - I want to talk about another area that is as important, and that is the gas-phase contaminates or Volatile Organic Compounds, better known as VOC's. Volatile, meaning a broad range of chemicals that evaporate or vaporize under normal conditions. We see thousands of those in the indoor environment. We will talk about what we are all familiar with. Things like carpet, that stain master coating that is on the carpet. It is great for keeping stains off, but it is constantly giving off chemical compounds that we are breathing. Manufactured wood products with all of the glue in it. Paint. The ceiling tiles. The coatings that are on our natural, beautiful looking wood floors. Everything we put into the home is giving off gasses. It takes a new home 5-10 years before the amount of off gassing slows significantly. In essence, we are living in a toxic waste dump. These things are aldehydes, formaldehyde is the most common we think about. We all remember that with hurricane Katrina and the 10's of thousands of travel trailers - now they are setting in fields, unusable because of the formaldehyde that is off gassing from the cabinetry inside the very small space. It is dangerous. The US government never said anything about the formaldehyde that is off gassing from the same travel trailers that the public is buying. It is only the ones they own and now they cannot sell them because of that. We need to get rid of keytones and light hydrocarbons. I already mentioned ethylene, the problem NASA had and the need to break that down. All of these VOC's fall into the same category, and we have the capability with this photo-catalytic reactor to break these down - to put them through the process of molecular disassociation. Taking them from formaldehyde or ethylene down to compounds that eventually filter down into carbon dioxide and water vapor. Something that is harmless in the indoor environment. #00:39:00.1# Let's talk about how this works inside the indoor environment. We are talking about an active purification technology and I want you to get in your mind how it emanates from the cell and how it breaks down mold, bacteria, and virus 24-7. We are not talking about something you turn on when you are not at home. Or you run in an area that is unoccupied. This is there, working all of the time. Everywhere the air goes, this is working on it. #00:39:34.3# If there is mold growing on the carpet, on the baseboard - it is breaking it down. It is inactivating it. The advanced oxidation products are going to work. Not only on pathogens, it also works on smoke, pets - another big issue, and there are cooking odors - it is breaking those down. #00:40:05.7# Then we have the volatile organic compounds - the things that come from new construction and renovation, things like paint and the chemicals that come from them. WE are talking about the glues we find in plywood. New carpet has the stain master stuff as well as the glues. Every part of carpet is off gassing for years. Chemical compounds are found in the cleaners we use to clean our homes and businesses with. All of these things, we take our purification - it is emanating out and breaking those down 24-7 so we have an environment that is free of those. Formaldehyde is broken down to levels are immeasurable. That is the kind of results the technology can bring. #00:41:02.0# I would like to leave you with one final example of how this technology is able to effect the indoor environment. We've talked about reduction of particles, the reduction of pathogens and the breakdown of VOC's. This particular example does a great job of showing the reduction in particles and pathogens. We are talking about a hospital in Iowa that has an in-vitro fertilization lab. This lab needs to be clean where they are doing the insemination process inside of a petri dish to create life. You do not want that to get contaminated with biologicals. This is a clean room environment. #00:41:48.4# Here on the screen, you basically see this room is very small. These are the chairs, so you can see that it is not big. There are 4 vents in the ceiling that supply air to the room. There is a very high turn over of air. These are HEPA filters that are on the supply side of the vents. The intent is to get lots of air exchanged and to keep the 4 areas, where they do the creation of human life, very clean. We installed 2 of our systems, one in each of the main ducts feeding theses areas - which is a lot more than this area would normally take - but keep in mind the high air exchange rates. The non-thermal plasma was being diluted. We installed 2 units and took a look at the biological contamination. The red numbers are the locations where samples were taken. 1,2,3,&4 were the most critical areas. Before we installed the units, the sample taken showed no biological matter. That is good for this area. So we could not improve on that. But in 5 & 6 and the center of the room and the operating room - which is a procedure room where the insemination process takes place - that area, the anti-room and the hallway did have biologicals. The center of the room had 14 colonies identified. Afterwords there were zero. In the procedure room, locations 7&8 - they call the operating room - there were 9 colonies and zero afterwards! In the hall way, 27 - now remember this is an area that is not treated, some air flows into the hallway - they went from 27 to 8. This anti-room, which is typically sealed went from 23 to 15. Only when the door is opened, does some air get in to there. These are extremely good results on microbial reduction. But was was really fascinating, keeping in mind that this is a class 5 rated clean room - we wanted to take a look on what the effects were on the particle reduction. We see that before hand, they were in the thousands of particles per cubic meter - that is extremely low. In fact, if you look at the hallway area at 9 & 10, they were at about 1.5 million particles per cubic meter which is a fairly clean environment. I have seen it up to 3 and 4 million. That is typical, very clean inside the room which is great. After the equipment was installed, we see a reduction that is absolutely amazing. As much as 99% in the main part of the room. In the main part of the room there were reductions of 80-90% even into the high 90's. And even in places that were not treated directly , like 7 &8, there was 38-79%. Even the hallway was well over a 50% reduction in particles. #00:45:06.1# We are able to have a very positive effect on particles, pathogens, and in breaking down VOC's as well. It has been a pleasure presenting the UVAIRx technology to you today. We look forward to answering your questions that you have about the technology and how it might help your facility. #00:45:26.4# [Content_Types].xml #!MB ;c=1 _rels/.rels theme/theme/themeManager.xml sQ}# theme/theme/theme1.xml G$$DA : BR {i5@R V*[_X ,l\Y Ssd+r] 5\|E Vky- V4Ej 6NGU s?^V *