What is HEPA(Air purifiers)? HEPA - High Efficiency Particulate Arresting HEPA filter is over 99.9 % efficient in trapping all allergens and airborne contaminates down to 0.3 micron in size such as: lung damaging dust, mold spores, plant spores, pet dander, pollen, bird feather dust, dust mite debris, bacteria, germs, microbes, etc. 30 Particles at 0.3 micron in size out of 100,000 ones pass through the HEPA filter (on average). What is negative ion? The Negative ion can be generated when- hydrodioxgen (water) is impacted to form negative oxygen ion; or in ionization, the needle can discharge dissociative electron when it is under a high negative voltage. The electron can easily combined with mutual oxygen and form negative oxygen ion. We feel our breath become mush cozy and relax when we are near water falls, at sea beaches, or in mountains. This is because there are more negative oxygen ion contents in such places. The negative oxygen ion is also called as “air vitamin”. It helps to improve the air quality, and also helps to eliminate efficiently the irritating gases released from decoration material such as benzene, formaldehyde and ammonia etc. It can also have reactions with odor molecules attached on the wall and ceiling. The same time, it also has an effect to prevent the growth of mold and germs.

General Effects on Health Research has shown that negative ions can: Reduce histamine, which triggers hay fever. Affect levels of serotonin, a neuro associated with anxiety, stress and migraine. Have a beneficial effect on anyone suffering from bronchial complaints such as bronchitis asthma, catarrh and the common cold. Help sufferers of insomnia, migraine, emphysema, eczema, headaches, tiredness, and general feelings of malaise. Increase the speed and quality of healing of burns and surgical incisions with less cross infection and reduced pain. Enhance the body’s absorption and utilization of oxygen, thus assisting concentration and alertness. Reduce the effects of passive smoking ,and allergies to pollen, dust and pets. Remove and destroy airborne bacteria and viruses. Anion’s working principle, biological effects and physical effects.