PuriAir

Air cleaners and purifiers can filter the air your family breathes by removing particles such as dust, pet allergens, odors and smoke from your home. The air that is returned to the room is much cleaner. Air cleaners are available in portable units or whole-home systems. There are many on the market with various filtration stages and some have enhanced air quality features, so prices vary considerably. Before you start shopping, these tips can help you sort through the air cleaner features. Air Humidifier was originally used to add moisture to the air to create a more comfortable  living environment. Neverthless more and more  air humidifiers have been equipped with "new functions" like anion...

If you are a trader or a successful business owner, you must have office room for running business. If it is so, please purchase the cost effective and environment friendly air purifier for protecting your business place from the onset of air pollution and illness. It is seen that due to the dereliction of duty and lack of civic sense, many businessmen connive at the importance of the air filtering machines in their offices. They are financially rich but they have the lack of knowledge in this case. Therefore they have to suffer the brunt of many diseases which affect their bodies in different ways. Without any confusion I can tell you that in near future every person will have the upgraded air...

Air purifiers have tremendous benefits for everyone. Purifiers are phenomenal devices that clean your air of dust, odors, germs, smoke, mold, pet dander, pollen and many other elements that we breathe each day. They are great for not only allergy suffers but for everyday living because of the benefits in improving the air we all breathe. They are available for as little as $20 to as much as over $1000. There are many factors to consider when purchasing an air purifier that will meet your budget and goals. Here are 6 factors to consider when purchasing: 1. Area Coverage - Consider the total area you're looking to cover and make sure the purifier covers the area efficiently. Some air purifiers cover...

If you own a furnace then furnace filters should be something that you are familiar with. What you may not know is that the type of filters you choose for your furnace can save you money. One of the most popular choices for filters today are the disposable fiberglass type. This is due to the fact that they are easy to maintain since all you have to do each month is remove them, throw them out and replace them with brand new filters. While this process may be simple, it is also costly in the long term. Compare this to buying disposable plates to eat from. They are convenient as well but costly over time. If you want to save money then you need washable furnace filters. Otherwise known as reusable...

Where it concerns the health of you and your family, it is important that you choose a suitable furnace filter. If you are a first-time homeowner, or just renting a home for the first time, then you definitely want to find a cost-effective solution for a furnace filter. You can seek out information through the internet, by searching your local yellow pages, or even by word of mouth to help you make the best decision. It is important that you practice regular maintenance of your furnace and air conditioner to ensure against unexpected breakdowns. Besides cleaning, you need to make sure to replace your furnace's air filter every now and then so that you don't have an unnecessary buildup of dust and...

Galileo Galilee, a very famous physicist invented the thermometers which is used to check the temperature precision. These thermometers work on the principle that the density of liquid changes with the change in temperature. The 34cm Galileo thermometers are one of the best variations available. These are very beautiful to look at as it contains multicolored balls. These colorful globes are exactly weighted to determine the exact rise or fall of temperature. The 34cm Galileo thermometers has five to seven multicolored balls. The process of reading the temperature with the help of the thermometer is very easy and interesting. If there is a variation in the degree of temperature, the movement of the...

Infrared thermometers are today the best alternative to the traditional thermometer for gauging temperature in a non - contact manner. They are used in almost every industrial sector that requires measuring temperature in their operations such as in gourmet industry, in household appliances, in electrical appliances, and the automotive industry among many others. In this article you would find information regarding their uses in the automotive sector. As mentioned above, infrared thermometers are used extensively in the automotive industry to diagnose problems ranging from air conditioning, brakes, to engines. They also help in avoiding dangerous car interiors by convenient temperature measurement...

There are many home proprietors who have envied motels for their property swimming pool. You will discover countless persons who hold a need to stay aware with every single change getting location at their domicile! Because many years, the men and women happen to be putting the needed efforts and you can find numerous owners who love to acquire the comprehensive pleasure from your swimming pools and also the recreational actions with their complete family circle. The undersized in-pools which are installed while using electrical heating units can create the soothing and leisure atmosphere for swimming! Maintenance of the swimming pool isn't a simple job. You require pulling up your socks and...

Have you ever just looked around your room, lets say your bedroom and actually observed the dust that has accumulated in places. There are many things that are just floating through the air and we are breathing these particles in every second of every day. A room air purifier can help eliminate unwanted particles in the air. If we could see through a microscope some of the things we are breathing in, we would be horrified. Believe it or not, there are things you are breathing in that look like prehistoric monsters. They are gross to look at and yet our bodies are breathing them in all the time. This article will talk about some of the advantages to using a room air purifier. One of the many causes...

There are different types and kinds of digital thermometers available in the market today. Meat thermometers are gadgets used to measure the temperature of meat, whether turkey meat, ham, roasts, and even poultry. The types of digital thermometer being sold in the market today have specification depending on the type of use. Digital meat measuring temperature is helpful to us because by measuring the temperature, we make sure that the meat is ready to eat, the bacteria are destroyed, and the health threats are minimal and manageable. At the same time, if we take a closer look at it, meat thermometers are to our advantage since it will give us an appropriate temperature rate that is conducive for...

Infrared thermometers are the latest temperature gauging instruments that are used widely both in private, professional, commercial and industrial sectors. They are popular as non contact solutions, unlike their traditional counterparts. With a wide variety of thermometers available in the market, it is really difficult to zero in on the one of your choice, requirements and budget. Try the following checklists to let you choose the ones of your choice. Temperature Range of Infrared thermometers: This is an important factor to look out for if you intend to order thermometers especially for heavy duty work purpose. Needless to say that the temperature ranges differs from one thermometer to the other...

As we all know that thermometer is a device which is used to check the temperature precision. And temperature does not always mean that it has to be body temperature. So the question arises what a Galileo thermometer is? In the past, no assumptions could be made about the heat and temperature on blazingly hot days until Galileo Galilee the very famous physicist invented this thermometer. And so the thermometer still bears his name. Galileo thermometers work on the principle that the density of a liquid changes as temperatures change. Each internal globe is exactly weighted to rise or fall as the temperature changes and thus can be used to accurately tell the temperature. Galileo thermometers come in...

Thermometer technology has improved vastly in recent times. Lately, a new kind of thermometer-the laser thermometer-is becoming much talked about. As the name suggests, this thermometer works on the laser principle. But that's all most people know about them. Let's get to know these thermometers in a bit more detail here. What Are Laser Thermometers? These are thermometers that work on the principle of laser. When any substance is hot, it radiates this heat from all of its parts. This causes the molecules in this area to vibrate with greater velocity. Laser can measure this increase in velocity, and this is then converted into a temperature reading. This is the reading that a laser thermometer...

The popularity of 34cm and 62 cm Galileo thermometers are rising day by day not for its functional use but as a decorative item. Earlier these instruments did not hold much attention among the general population because it was just a simple instrument which was used to measure the temperature of a body or surrounding. This device which was invented by Galileo Galilee has gone through a remarkable alteration in its outer appearance. This is one of the reasons why the 34cm Galileo thermometers have attracted the attention of the masses. The invention of these instruments was originally made to check temperature precision. Similar to the traditional thermometer, the 62cm Galileo thermometers also...

The air that we breathe in our homes can be often saturated with undesirable elements. Some of these pollutants can include viruses, bacteria, dust mites, pet dander, etc. Inhaling these harmful substances and organisms can be detrimental to our health. Some of those ailments include respiratory problems such as pneumonia as well as the development or exacerbation of allergies. To counter these pollutants in the home or at work there are various air purifying machines that are available to filter the air. One such machine is an electrostatic air purifier. There are many advantages to using an electrostatic air purifier in the home. Some of those advantages include their silent operation, no...

Having pets in your life means you've got a lot of love in your home. But with a warm blooded pets such as dogs, cats, birds, ferrets (to name a few) comes hair, dander, and sometimes even odor. An air purifier designed with pets in mind should be effective without sacrificing their safety. Here are 5 features to look for that will make your air purifier safe for the pets and humans who live in your home. Rugged -- Your air purifier should literally be made of steel. Young animals (older ones too) can be curious and chewy. A cleaner with a body made of steel makes it virtually impossible for your pet to break off small pieces that could cause a choking hazard. You should also be able to place your...

What are the considerations for and against buying a negative ion air purifier? In just one minute, let me reveal the most important ones. A negative ion air purifier attempts to clean the room by eliminating particles from the air. The particles are not actually captured and contained as in a filter. The way it works is the particles are drawn into the machine and negatively ionized. They are released back into the room where they are attracted to positively charged walls and furniture. This is not very desirable and has been given the name, "black wall effect" since surfaces near the ionizer can become heavily soiled. Negatively charged particles may also be drawn to positively or neutrally...

Air purifiers are essential if you want to improve your indoor air quality. Residential air cleaners were first introduced in 1963, by Klaus Hammes. Since that time, there have been numerous improvements in their design and functionality. Today we have home, car, ionic, HEPA, ozone, and personal purifiers. Each has its own set of benefits and features. Air Purifier Types And Uses has cleaners that remove a wide variety of pollutants and contaminants from the air that we breathe. They are especially helpful to people who suffer from allergies or asthma, although each and every individual will benefit from breathing clean air whether or not they have any breathing disabilities. Purifiers are designed...

If you are a new parent, or expecting a baby in the future, you know that having kids will change your life, in a good way, forever. As a parent you will do like most parents, and do anything you possibly can to make sure that they are safe and healthy. Do you know how your child can benefit from a good air purifier? Chances are pretty good that you have heard of an air purifier. If not, well they are electronic machines that clean the air around you. They accomplish this by trapping air particles and bacteria using filters or collection grids. This prevents these particles from circulating over and over again through your house. Clean air is important and these machines make that happen. If your...

Most people do not realize that the air that they breathe in could be polluted, which can lead to various respiratory and health problems. There are great ways to avoid breathing in polluted air; one way is by purchasing a good-quality air-purifier. A great appliance that people have found very helpful for keeping their home air pure is the Blueair 501 air purifier. This device is not like most other types of purifiers because it works by silently infusing air molecules through its filter. The patented technology of this device then releases all molecules of air back into your house; providing you with a maximum level of purity. For people with bad allergies and breathing problems, getting an air...

It's sad, but true. The air we breathe is dirty and getting dirtier. Even the air in our homes can be hazardous to our health. It has been estimated that the air inside of the average American home is at leas five times more polluted than the air outside - even in the most metropolitan area! As our homes become more and more energy efficient, we have not only succeeded in making our homes air tight t save energy costs, but have also succeeded in blocking any natural ventilation to allow chemicals, pet dander, dust and other household allergens and pollutants to escape. Its rare these days for anyone to simply throw open the windows and "air out the house" on a regular basis. Little did we...

The Newest Technology I have found, as a result of the recent volcanic activity in Iceland, the Little Buddy. They have been sold throughout Europe in the last month as a way to battle breathing in the volcanic dust particles. It is very small, only 1.5 inches high and you wear it around your neck. It comes in two colors, pearl and graphite. You can purchase just the Little Buddy, or a Buddy Combo which includes a charger for the rechargeable batteries. In fact I was recently in an airport terminal standing in line and you know those roped lines that you have to maneuver through? I felt the pressure of all of those bodies around me invading my personal space, there was someone behind me coughing up...

The Hoover Tempo Widepath upright vacuum is a great product in itself with multiple features to keep your home or establishment spotless and clean. Once you get to know this vacuum you will appreciate its functioning and usability. This unique vacuum cleaner comes with a 12 amp motor and a 15 inch cleaning path that speeds up the vacuuming process while cleaning the air indoors as well through the allergen filtration structure that can trap 100 dust particles, 99% ragweed and grass pollens to give you a cleaner and fresher dust and pollution free air to breathe in. This HPEA filter vacuum also comes with anti-microbial protection that will help control odor producing germs. The dirt and dust...

If you own a cat, dog, bird, bunny, or any other adorable creature, you know there's nothing like coming home to find those big trusting eyes welcoming you home. As a pet owner you also know all of the responsibility and commitment that come with pet ownership. Using a pet air purifier means you can turn some of this responsibility over to the purifier and spend more time just enjoying every minute you have with your pet. Here are 3 reasons you need a purifier. Hair - If you have a warm blooded pet, it has hair or fur. And you know first hand that hair and fur can and do go everywhere daily with normal activities. Once airborne it can and often does linger in the air for hours until you or your pet...

The innovative Tisserand Vaporising Ioniser provides both fresh clean air through the release of billions of electrons are generated by the ionising points of the Tisserand Vaporising Ioniser As they collide with air molecules, they release a cascade of healthy refreshing negative ions which revitalise the air helping to restore a healthy balance of ions in the home or workplace. Its benefits are further enhanced when used with pure essential oils to create the most wonderful, stress free and mood enhancing sensations. Recent research into so called sick building syndrome has suggested that the air in sealed centrally heated homes and air conditioned offices is often very dry and can make us drowsy...

There is so much talk these days about indoor air pollutants and the negative effects that they have on our health and overall quality of life. But how can you tell if you need an air purifier. Here are 3 easy signs to look for, and the presence of any one of them is likely an indication that your indoor air quality and overall health could be improved by using an air purifier in your home. Appearance- This sign is not aimed at how well you've chosen paint colors for your rooms, or how neat or not so neat you keep your home. This is about what you see on the furniture around you. Does your home seem to need constant dusting? Are there wisps of pet hair floating in the air? Are you able to see a...

There are not many people shopping for a home today that will even consider purchasing one that does not have a central heating and air conditioning unit already installed. They can cost thousands of dollars and many people do not want to have to go through the expense or the work of having one installed them selves. With all of the other things to get done when someone moves into a new home, who would want to have to have duct work installed? When you build a new home or buy an existing one, you should know how to take care of your central unit so that it will last you for years to come. It is recommended whether you use natural gas or electric that you have them inspected as often as recommended...

For asthma sufferers it is hard to cope on a day to day basis, knowing they might suffer an asthma attack. They know better how many things they have to sacrifice in order to be at least a little bit safe, the pleasure they are deprived of in order to avoid an attack and the precaution measures they have to take each and every time they want to go out. Yet, their home should be the place where there is clean air, so that everyone is in a healthy environment and comfortable. For a person who suffers from asthma, the best healthiest environment for them is one where the air that they breathe is clean and clear. This air has to be clean from things like dirt, dust, pollen, smoke or animal hair, as...

Most automobile owners are aware that a filter is used to capture and remove the dirty air particles from the outside air that leads into the engine combustion compartments. In the vehicles of today you have two commonly different types that are being used, paper and a K&N filter. The paper filter is just that, a filter that is made out of paper products (in most cars). The K&N filter is made of a mesh with a cotton filter medium and coated with light oil to aid in the capture of the dirt particles. Both products work great when used in the proper context for which they are designed. The Problem Paper filters are designed to capture the dirt through the paper and can be plugged fairly quickly. It is...

Oleg Systems Co. make all types of industrial dust collection systems. Dust collecting equipment is available in numerous designs utilizing a number of principles and featuring wide variation in effectiveness, initial cost, operating and maintenance expense, space, arrangements and material of construction. Factors influencing dust collection equipment selection include: * Concentration and particle size of contaminant.   In most dust conveying systems, usual dust range from 0.1 to 100 micron - a rather wide range of particle sizes. * Degree of collection required.   Evaluation will consider the need for high efficiency high cost equipment such as electrostatic precipirators; high efficiency...

Oleg Systems Co. engineers industrial packed air scrubbers for air cleaning. Wet type dust collectors / packed air scrubbers are available in numerous designs utilizing a number of principles and featuring wide variation in effectiveness, initial cost, operating and maintenance expense, space, arrangements and material of construction. Wet type dust collectors are liquid (usually, but not necessarily, water) to capture and separate particulate matter (dust, mist, and fumes) from a gas stream. Some scrubbers operate by spraying the scrubbing liquid into the contaminated air. Others bubble air through the scrubbing liquid. Wet Packed Scrubbers are used to remove gaseous and particulate contaminants...

So you have heard of sick offices, you would know that there are also sick homes. Yet, many people would stare in disbelief if you tell them that you are living in a sick home. The fact that indoor air is two to five times more polluted than outdoor air is somehow has not hit home yet. Sick homes can cause severe allergies and respiratory problems that could literally become fatal, as in the case of mold infestation. If detected early and rectified, no one at home should have to go through the physical and emotional trauma. An indoor air purifier is now fast becoming a basic essential in the home as windows and doors are often kept shut making ventilation very lacking. Airborne pollutants can range...

Are you among the people who see and use Air conditioners merely as Heaters and Coolers without realizing that an air conditioner is equally an air filter or purifier? Yes, this could militate against proper care for the air filter in your air conditioning system resulting in dirty filters and impure indoor air. Without a clean air filter in your air conditioner, all the other parts would not produce a clean indoor air for you. You need to regularly replace the air filter of your air conditioner depending on the air quality of your immediate and indoor environment. If your air conditioner's air filter isn't kept clean, aside from stirring up impure air into your home, it will work laboriously...

Air purifiers in homes, offices and public spaces ensure that the air we breathe is free of pollutants, allergens, and odors. Many people use indoor air cleaning systems to purify the air. Often, the simplest solution is to add a filtration module to the air conditioning or heating system. The other alternative is to use a portable air purifier. Most experts recommend using an air purification system that uses HEPA or high efficiency particulate air filters. When choosing an air purification system you need to consider: 1. Performance of the air purification system. An HEPA filter 99.99 percent of particulate matter will be removed. 2. The size of the room and the capacity of the air purifier system...

Ideally, the air in your baby's nursery should be as free of pollutants as possible. This is because babies are more sensitive than adults are, to breathing problems and respiratory infections. One way of ensuring that there is clean, fresh air in your baby's nursery is to install an air cleaner. An air cleaner is used to purify air in a room by removing allergens such as dust particles, dander, and mold spores. There are three types of air cleaners:o Ionic air purifiers: These are the most popular air cleaners available. They work by negatively charging dust particles and other allergens floating in the air and causing them to drop to the ground.o HEPA air purifiers: These remove pollutants by...

urifiers are used to clean the air in homes, offices, and other closed spaces. People who suffer from allergies tend to use air purifiers because of the health benefits they afford, especially for asthmatics. The general public is turning toward the use of air purifiers as well, simply because of the health benefits associated with breathing cleaner air. People spend most of their day inside, which is why the quality of indoor air is so important. On top of this fact, rooms are tightly sealed and don't allow enough air to flow freely. Studies have shown that indoor air quality is actually much worse than the air outside! There are several types of pollutants that contribute to poor indoor air...

It has become evident in the past decade or so that many people living in urban and even suburban areas are increasingly experiencing respiratory issues due to dirty air. With that increase it has become increasingly more popular to use some sort of air filtration to help breathe easier. In the marketplace today, there are two popular methods of filtration, HEPA and ionic. HEPA filter technology is among the best technology available for air cleaners. It is a very effective system but the filters must be changed to remain effective. HEPA filters were originally developed by the Atomic Energy Commission to protect the respiratory system from radioactive chemicals. Although costs can range up to a...

Ah....Taking a deep breath of fresh, clean-smelling air is great. And, the cleaner the air is, the better for all. And while most of us recognize that oftentimes the outside air contains pollutants from factories and plants, we may overlook the air in our homes. But whether you live in a home that was just built or a home that has been around for decades, you will find that having an air purifier system installed will greatly improve how you feel. There are 4 basic types of air purifiers, each with their own perks and quirks. They range in cost and ease of installation, so don't just go out and buy the first one you see. In addition, it should be noted that there is no exact requirements to grade...

Consumers seeking air purifier information suffer a plague of lies, exaggerations, false statistics, concocted quotes from unidentified officials, outright fraud, and the perverse rejection of clear scientific evidence that some products cause harm. Should you simply reject air purification as the latest in a long line of health frauds? Is it simply too easy to be taken for a fool? Example: How Bad Information Leads to Bad Choices It's easy to show how the lack of accurate air purifier information has served to the disadvantage of consumers. A clear and recent example is the Sharper Image Ionic Breeze. At it's height, one of four air purifiers purchased was an Ionic Breeze. Yet its performance was...

According to studies done by scientists, over 50 million Americans suffer from allergies. With most people allergies are simply "seasonal" and they come and go as the seasons come and go. Their biggest problem is usually in the summer time when pollen is at an all time high. But a number of people experience chronic, year round allergies. People with seasonal allergies often have symptoms such as itchy, runny nose, congestion, and sneezing. However, symptoms of non-seasonal allergies include: coughing, watery eyes, allergic conjunctivitis, and post nasal drip. It doesn't matter if you're a seasonal or non seasonal person, allergies are bothersome either way. Not only do allergies make it hard to go...

Cat dander is a carrier mechanism for cat allergens, which is bad enough. But there are several additional aspects to be considered. First, even one cat produces enough dander to be a plentiful food source for dust mites. Dust mites serve as a secondary source of allergens through their droppings and their dead, dried up carcasses. Not only should the impact of cat allergens and dander be considered, but also the effects of increased dust mites. If you’ve ever noticed dust in a shaft of sunlight the particles you were seeing were typically in the 50-micron size. Under ideal conditions the unaided human eye might be able to see particles as small as 10 microns. Approximately 75% of cat dander...

So you have done your research and after a lot of thought and deliberation have brought home an air purifier best suited to your needs. Now all you need to do is plug it in and let it to do its thing. Your job is done right? WRONG! For an air purifier to work well, it requires some degree of maintenance and this is crucial if you want to safeguard your health and that of your family. The kind and amount of maintenance that a home air cleaner requires varies from type to type. Its important that you enquire about this matter to the salesman while making your purchase as although looking after your air purifier does not take away too much of your time, it can prove to be quite expensive. So while you...

You want only the best for you and your family. You try to ensure that your family eats healthy, gets plenty of exercise, and stays away from those things that would be harmful to their health. However, there may be one area of your life in which you are not taking proactive measures to be as healthy as possible. Have you ever considered how dirty the air you breathe in you home may be? Surprisingly, many health conscious people neglect to effectively and efficiently clean their air in their home. If you have children or are an allergy sufferer you need to make sure the air in your home is clean and pure. You never know what may be floating in your air, just waiting to attack your lungs, sinuses...

The Misery Of Allergies As a young boy I was one of the kids who had to stay indoors to avoid the misery that came with sneezing, sniffling and asthma which came from pollen, grass and leaves. Weekly shots at the allergist and medications were a weekly routine. And even though I was only age 11 (1969) I began to experiment with air purifiers and air cleaners of all kinds. When you can't breathe you'll do anything for relief. Here are the primary types of air purification, with a quick rundown on their effectiveness for pollen allergies. Ionizers My first was an air ionizer, negative ion generator to be more precise. Good for some forms of mildew, pollution, and odor, but not very good for pollen or...

1. Do I really need an air purifier in my home? It depends on several factors, including your own comfort level and what theindoor air quality is in your home. There are several factors to take intoconsideration, however. First and foremost, many health organizations agree that indoor air qualityis often worse than outdoor air quality. In fact, for many people, indoorallergens and irritants such as dust, smoke and pet dander may be two to fivetimes as bad in their homes as outdoors! There are several indications that you may benefit from an air purifier inyour home. Reasons to get an air purifier include: - Allergy symptoms such as itchy, watery eyes and runny nose - Itchy, dry skin or frequent skin...

Numerous studies have shown that the air inside your home may contain as much as ten times more pollution than the air outside. For some people, this indoor air pollution can cause or worsen the symptoms of a number of conditions such as asthma and allergies. Purifying the air inside your home may lead to improved health, especially for children and the elderly. There are a number of different air purification products on the market. These products can range greatly in price as well as effectiveness. Knowing how to choose a good air purifier will allow you to make an informed decision and choose the air purifier that best suits your family's needs. When it comes to high quality air purification...

The world has become health crazy. There is no getting around it, we are turning towards healthier whole grain cereals and breads, we're exercising more, and we're cleaning our homes like fanatical lunatics. Included in this cleaning craze is the obsession with cleaning our air. We've got air purifiers in just about every room. This leads to just one question. Does it do any good? To begin with, getting an air purifier for your home can be confusing as anything. With all the different brands to choose from and different types of air purification systems it's almost impossible to know which one is any good, if any of them are. Then of course there is the burning question, "Do we really need an...

Whether it's the air in your home or office space that you're trying to better, you'll want to use, either a HEPA air purification system or a static-electric system. You might be wondering at this point why you should even have one of these air purifiers in your home or office and what benefits they carry. With the amount of time most US citizens spend inside, in enclosed spaces, it's best that you limit the number of airborne pollutants you breath in. Whether it's spores of pollen, mold, pet hair/dander, or just plain old dust, you want to get these things out of the air, as they can actually be found at much higher levels than those found outside. Before you go out and buy yourself a brand new...

As notorious as the most commonly known airborne irritants are, they are not the most damaging threat to your health. Neither pollen, dust mites, nor pet dander pose the same risk as ultra-fine lung penetrating particles. Most of the irritants and allergens you may be familiar fall into the category of coarse airborne particulates. That is , they are in the 2.5 to 10 micron size range. Coarse particulates usually become trapped in the nose and throat causing sinus irritation and allergies. That's certainly reason enough to want rid of them and many an air purifier can serve that purpose. But more than 90% of all particulates are 0.3 micron or smaller in size. These can enter deep into the lungs...