The negative ions released by the negative ion generator can charge particles such as smoke, germs, spores, pollen, dander, etc. in the air, and then be absorbed by the integrated discharge device. Its effect is better than that of filtering (even with very fine filter material. Can not filter solid particles smaller than the filter pores, let alone filter gaseous pollutants) or adsorption (such as activated carbon and other materials only have selective adsorption function) and other purely physical effects.

(1) Check the electromagnetic wave shielding performance of the generator, and it should not affect the normal use of nearby radios and televisions. You can bring a small semiconductor radio when purchasing, and it should not be disturbed 30 cm away from the working negative ion generator.

(2) When the back of your hand is close to the outlet of the negative ion generator 20 cm, there will be a feeling of cool breeze, which is the negative ion wind. It smells no taste, negative ions have no taste and color.

(3) Identification of ozone content. There should be no ozone smell (similar to the smell of wheatgrass or fish) at 0.3 meters, or no dizziness after a few minutes.

(4) Put a new plastic film food bag on your hand. When the hand is close to the outlet of the generator with good performance, negative ions will be sprayed on the food bag to generate electrostatic attraction, and the plastic bag will be tightly attached to the hand. Even if the negative ion generator is turned off, the accumulated charge will not disappear immediately, and the phenomenon of sucking hands will remain for a period of time; products with poor performance do not have this phenomenon.

(5) The best distance to breathe negative ions is 30-35 cm away from the generator outlet. It is best to place the vertical negative ion generator away from the wall in a spacious and unobstructed place.