722 BlueAir Millions of polypropylene fibers effectively remove 99. Its ion brush charges the air with negative ions without generating any ozone, making airborne particles cling more easily to the filter media and helping to increase overall cleaning efficiency. The ZON personal air purifier combines mechanical and electrostatic filter technology for highly efficient air purification. Patented HEPASilent™ filter technology captures six imes more particles than typical purifiers. 97% of particles as small as 0. 1 microns in size.