1. Micro-particle filtration (Filter Class F8) Eliminates micro-particles such as dust, mold spores and powder. 2. HyperHEPA filtration (Filter Class H13) Eliminates bacteria, viruses and combustion particles from automobiles and smoke, through a nano-fiber structure.For Critical Environments The IQAir CleanZone Hood is a table-top workstation with double-function: clean air hood and particle extraction hood system for the professional high-efficiency filtration of bacteria, viruses, spores, dust, soot, smoke particles, allergens, aerosols and other particulate contaminants. Applications cleanroom facilities laboratories medical & pharmaceutical environments military installations biohazard control units government institutions schools universities mail rooms