Warning to All Buyers of PCO Air Purifiers!
There are many "knock off" air purifiers on the market that claim to use PCO technology. If not used properly PCO technology will do little to purify your air. In fact it can cause an increase in harmful contamination.
Researchers have found with many PCO air purifiers that because of incomplete decomposition of the VOC's in the air stream there is a net production of formaldehyde, acetaldehyde, formic acid and acetic acid. Of particular concern was that the outlet concentrations of formaldehyde and acetaldehyde were 3.4 and 4.6 times the inlet concentrations, respectively. Both formaldehyde and acetaldehyde are recognized as important indoor toxicants. Formaldehyde is classified as a human carcinogen. Governmental guidelines suggest keeping indoor concentrations of formaldehyde and acetaldehyde at very low levels.
Many brands of air purifiers are beginning to use cheap imitations of PCO technology in their product. Most use cheap titanium dioxide (the basic white pigment in paint) as their catalyst. They then combine this with a cheap foreign UV lamp and call it a PCO air purifier. These air purifier will not usually provide any University studies to validate any claims.
Air Oasis developed a proprietary patent-pending five metal nano catalyst that is far superior to any cheap imitations on the market. Our UV lamps use a proprietary long life coating to more than double their life over the competition. Preliminary results from West Texas A&M University show huge reductions in formaldehyde and other VOCs. Rapid reductions in odors where also observed. We will be posting the final results when all testing is concluded.
Don't risk your family's health and waste your hard earned money on cheap imitations.
Buy only the best! Buy an Air Oasis!
Are PCO Air Purifiers Better Than HEPA Filters?
By Jeanie Wong Platinum Quality Author
HEPA air purifiers have been on the market for a while, but there have also been some recent advances made in air purification technologies as of late. Many air purifier manufacturers are now utilizing Photocatalytic Oxidation (PCO) technology as a way of removing toxins from the air. This air purification method may be the most advanced one yet, and some leading air purifier manufacturers are beginning to add PCO air cleaners to their product lines.
For years, PCO has been FDA approved for reducing bacteria in meat processing plants, and it is even used to cleanse pesticides from the fruits and vegetables we eat. Essentially, PCO filtration can be summed up as such: An intense light is reflected onto a metal surface which in turns oxidizes toxins. In chemistry, photocatalysis is defined as the acceleration of a photoreaction in the presence of a catalyst, and an example of this would be the oxidation of organic contaminants such as bacteria and mold using magnetic particles coated with titanium dioxide nanoparticles, and agitated using a magnetic field that is exposed to UV light. Therefore, this type of purification technology converts harmful particulates and toxic gases into safer compounds such as carbon dioxide and water.
PCO uses broad-spectrum UV light which reacts with a thin film of catalyst which, in the presence of water, creates hydroxyl radicals and super-oxide ions that "burn" VOCs and microorganisms adsorbed on the catalyst's surface. With that in mind, many consumers may mistake UV air purification with PCO technology, and rightfully so. However, while both types of technology are similar in that they harness the oxidation properties of ultraviolet light, PCO purification systems utilize UV lamps with additional wavelengths. These additional wavelengths ensure a quicker reaction rate when it comes the degrading of toxic compounds that are polluting the air you breathe.
Because PCO technology is an extremely powerful purification method, PCO units have the ability to eliminate particles as small as 0.001 microns, including the tiny penetrating particles that can absorb into your lungs and cause damage (HEPA filters are only able to filter out particles as small as 0.3 microns). Studies have also shown that in addition to VOCs, toxic gases, and chemicals, photocatalytic units can also render gases like carbon monoxide and nitrous oxide harmless - pollutants which can often escape standard units utilizing HEPA or ionic technology alone.
Those concerned with the possible health effects associated with PCO will be glad to know that PCO units have been found to be much safer than ozone and ionization, and they work wonderfully well for those with asthma, allergies, and multiple chemical sensitivity.
Jeanie Wong is a marketing writer with extensive knowledge of heating, cooling, and air purification systems.
Article Source: http://EzineArticles.com/?expert=Jeanie_Wong
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