99.99% removal of particles as small as 0.007 micrometers. 9-step volatile organic compound (VOC) adsorption filter, removing odours and hazardous gases. Revolutionary technology that reduces microbial load and inhibits the growth of microorganisms through microbicidal action. Guaranteed superior performance and HEPA certification. CE, UL, CSA and ISO certifications. Professional 9-PHASE DFS system for air purification I 20600-3.