TPA® technology includes an innovative use of the generator pole and the collector pole to form an ionic field of the air that can actively absorb particles, dust and smog, completely eliminating the traditional passive filter. Using the integrated plasma function, the air purifier with TPA® technology absorbs the particles 100 times smaller than PM2.5 (Particulate Matter). The Q3 and Q7 purifiers effectively remove aerosols. The sterilization effect of high pressure plasma technology is 6-8 times the effect produced through traditional electrostatic sterilization. Compared to the air purifier with HEPA filter (High Efficiency Particulate Air filter) which allows to filter particles with a diameter bigger than 0.3 μm, the Q3 and Q7 models use the ionic wind technology of the TPA plasma air purifier ® which can effectively remove polluting particles down to 0.0146 microns. Due to an internally generated electric field, Q3 and Q7 contribute to an active elimination of bacteria and viruses in the air. The Q3 and Q7 purifiers have a digital liquid crystal display and a three-color indicator that helps you check the indoor air conditions in real time and avoid potential risks over time.