Electronic filters capture particles from 0,01 µm to 100 µm with a variable efficiency that depends on the speed of air that passes through them. With an average speed of 2,5 m/s they are classified according to UNI EN 16890 PM1 90% (efficiency higher than 90% on particles with dimensions lower than 1 micron) or PM2,5 95% (efficiency higher than 95% on particles with dimension lower than 2,5 micron).
Electronic filters also have a high microbicide power thanks to their high efficiency on sub-microbial particles. This is due to the destruction of the external membrane of bacteria/virus caused by thermoelectric shock when the ionized particles come in contact with the bulk blade located within the uptake section.
The concentration of some common bacteria’s were measured before and after the electronic filter and the efficiency, certified by ILH Institute of Berlin: the efficiency is between 98 and 99%.
It is important to point out that it's possible to reduce the risk of COVID-19 infection in confined spaces, which has an air conditioning system, combining an efficient air filtration system with a high air renewal rate and with a meticulous respect of the Governments' s rules of social distance, hands and surfaces hygiene.