Negative ions perform this function by attaching themselves to positively charged particles in large numbers and negatively charging those particles. As a result, these viruses, bacteria and pollen and spores become too heavy to remain airborne and are thus prevented from entering your breathing passage where they can make you fall sick. In other words, negative ions form a protective circle around you. Particulate matter 2.5 (PM2.5), refers to tiny particles or droplets in the air that are two and one half microns or less in width. Negative ions are abundant in nature, especially around waterfalls, on the ocean surf, at the beach and after a storm. The most important benefit of negative ions is that they clear the air of airborne allergens such as pollen, mold spores, bacteria and viruses. They also clear the air of dust, pet dander and cigarette smoke. They're really good at cutting down the airborne infection rate. Whether you are a healthy person, or someone who may have respiratory issues such as asthma or allergies, you may be considering purchasing this air purifier to reap the many health benefits of better indoor air quality. How small is 2.5 micrometers? The average human hair is about 70 micrometers in diameter, making it 30 times larger than the largest fine particle.  Power Source: Electrical  Capacity: 100 CFM  Voltage(V): 5v Model Number: JO-732  Negative Ion: 8,000,000 pcs/cm3  Product Dimension: 4.17 by 4.17 by 9.44 inches (106*106*240 mm)  Net Weight : 7.05 ounces (200g)  Includes: 1 Plant air purifier, 1 USB cable, 1 User guide
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