RX air400 is the best in the market because of its ability to clean the air as fast as eight times per hour, killing the microorganisms that contaminate the air. In this way, even if the asymptomatic patient carrying the disease doesn't wear masks, then RXair400 eliminates the pathogens released from the infected patient. RXair400 is certified both by Environmental Protection Agency (EPA) and Food and Drug Administration (FDA). RXair400 kills 99.99% of pathogens and removes bacteria and viruses that cause diseases like influenza, streptococcus, whooping cough, allergies, tuberculosis, etc. Apart from this, RXair400 is smaller in size and contains an ergonomic handle that offers portability.