BlueAir Cream ZON Purifier Filter - 2-pack BlueAir Patented HEPASilent™ filter technology captures six imes more particles than typical purifiers. 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. Millions of polypropylene fibers effectively remove 99. The ZON personal air purifier combines mechanical and electrostatic filter technology for highly efficient air purification. 97% of particles as small as 0. 1 microns in size.