9 Best Car Air Purifiers | We spent 35 hours on research, videography, and editing, to review the top options for this wiki. Has that fast food or your kids' smelly sports socks left a nasty odor in your car? Or maybe you just have allergies and want to avoid pollen on your daily commute. One of these portable car air purifiers will have you breathing easy in no time. They are designed to eliminate gases, smoke, bacteria, and strong odors, to leave you with healthy air in the cabin of your vehicle. sleek and unobtrusive design accepts dried flowers for air freshening warranty is only for 45 days 3 levels of filtration purifier is pretty expensive 0.25 micron hepa air filter offers 6-8 hours of sustained use the heat setting isn't very useful compact design takes up very little room automatic fan speed adjustments built-in air quality indicator light Peak Plus Best Car 4.8 million negative oxygen ions per cm³ also works in rooms up to 150 square ft.

helps to relieve car sickness modern looking and powerful filters last 8-12 months purifier is easy to install Negative air ionization therapy is the use of air ionisers as an experimental non-pharmaceutical treatment for seasonal affective disorder (SAD) and mild depression. Research seems to indicate that high doses work better than placebo but low doses do not. For SAD, a randomized controlled trial (RCT) comparing high (4.5x1014 ions/second) and low (1.7x1011 ions/second) flow rate negative air ionization with bright light therapy found that post-treatment improvement results were 57.1% for bright light (10,000 lux) compared with high-density ions, 47.9%; and low-density ions, 22.7%.[1] An older RCT conducted by the same authors also found air ionization effective for SAD at 2.7x106 ions/cm3.[2] A 2007 review considers this therapy "under investigation", and suggests that it may be a helpful treatment for SAD. An RCT comparing the short-term effects of bright light, an auditory stimulus, and high- and low-density negative ions on mood and alertness in mildly depressed and non-depressed adults found that the three first (active) stimuli, but not the low-density placebo, reduced depression on the Beck Depression Inventory scale;

the auditory stimulus, bright light and high-density ions all produced rapid mood changes—with small to medium effect sizes—in depressed and non-depressed subjects. As of 2009, the negative ion generators used are still undergoing multicenter phase II clinical trials. A separate randomized placebo-controlled study published in May 2010 found that the difference between high-density ion therapy and placebo (dim red light and low-density ions) was not statistically significant. The conclusion of this study was that bright white light therapy was significantly more effective than negative ion therapy for treating Seasonal Affective Disorder (SAD). Michael Terman, professor of clinical psychology in the Department of Psychiatry at Columbia University, who conducted the two studies on SAD, suggests that the mechanism responsible for the effect of this therapy on SAD is that the negative ion machines used in his studies are designed to mimic summer-like conditions by supplementing the sparse winter ion supply.

[][ – discuss] He stresses however that although some air purifiers utilize negative ion technology, the dose of ions delivered by a typical air purifier is far too low for it to have an antidepressant effect.novita air purifier malaysiaI just got deep into this question myself! new ionic air purifier tower 3qThat's because I build DIY purifiers in China to protect myself from the air pollution, and friends keep sending me links to products like this:Amazing! honeywell permanent ifd tower air purifierA "miraculous purifier" that removes PM 2.5 (particulate) and formaldehyde in just 30 seconds. And all that for far cheaper than regular purifiers and even cheaper than when I built my own purifier.So how do ionizers work?

Here's my bedroom, with an ionizer and bad particles in the air:That ionizer shoots out negative ions:Those ions cause the particles to stick to surfaces, like my bed, the wall, and the floor:That's the principle behind ion generators.A summary of scientific tests of air purifiers found that most ionizers score "near the bottom of the effectiveness ratings" (p. 19). They concluded that most ionizers are too weak to have an effect. Studies do show a decent effect if they use very strong ionizers--much stronger than most ionizers on the market (p. 19).The problem is, when you put that many ions into the air, it produces ozone levels above safe limits. Ozone is harmful to humans, so that's not what I want my purifier to do!Let’s say I have a beastly ionizer, and I can even accept the ozone pollution it’s causing, you might have noticed that the ionizer didn't actually filter out the particles. It just made them stick to my bed, wall, and floor.Since the particles floating around here in Beijing include things like arsenic cadmium, and lead, I'd rather not have them stick to my pillow.

Second, they're still a danger. The particles are just sticking to my bed. So let's say Thomas comes home:When I sit down on my bed, I'll dislodge those particles, and they'll float back into the air:Those problems are what led Consumer Reports to publish tests and negative reviews of the Sharper Image Ionic Breeze. Sharper Image sued Consumer Reports; That's why I avoid these "miraculous" purifiers. Instead, I use HEPA filters. HEPAs actually capture particles, and they are backed by empirical tests. Here's a little test I did with HEPA filters in Beijing: A water ionizer (also known as a alkaline ionizer) is a home appliance which claims to raise the pH of drinking water by using electrolysis to separate the incoming water stream into acidic and alkaline components. Proponents claim that consumption of the alkaline stream results in a variety of health benefits, making it similar to the alternative health practice of alkaline diets. Such claims are not generally accepted in chemistry and physiology.

The machines originally became popular in Japan and other Far Eastern countries before becoming available in the U.S. and Europe. Despite being described as 'water ionizers' the machines are designed to work as water electrolysers.[2] This is an electrochemical process in which water is split to form hydrogen and oxygen by an electric current. The overall chemical reaction is shown below:[1] During this process the water near the anode is acidic while the water near the cathode is alkaline. Water ionizers work by simply siphoning off the water near the cathode. Water siphoned off the cathode side contains increased levels of hydroxide (OH−) and would be expected to have a higher pH (i.e. be more alkaline), whereas water siphoned off near the anode would have increased levels of H+ making it acidic.[1] The acidic water is claimed to be useful for household disinfecting. The effectiveness of the process is debatable because electrolysis requires significant amounts of time and power;

hence the amount of hydroxide that could be generated in a fast moving stream of water (i.e. a running tap) would be minimal at best. Additionally the process of reversing the reaction requires much less energy, so if the area between the alkaline and acidic water is at least semi-permeable the water will undergo another reaction that just leaves neutral water and free Hydrogen and Oxygen atoms. The second reaction is shown below:[1] Similar machines have been used to produce electrolysed water, which is used as a disinfectant because it also contains sodium hypochlorite, the main ingredient in bleach. Water ionizers are often marketed on the basis of health claims; normally focused on their putative ability to make water more alkaline. A wide variety of benefits have been claimed, including: the ability to slow ageing,[4] prevent disease, offer protection from nuclear fallout,[5] give the body more energy, and offset the effects of acidic foods. There is no empirical evidence to support these claims, nor the claims that drinking ionized water will have a noticeable effect on the body.