Fig. 2From: The bactericidal effect of an ionizer under low concentration of ozoneSurvival after exposure to negative and positive ions. Each bacterial species was filtered and exposed to ion-with-fan (IZ + F) and fan only (F-mode) conditions. The percent survival shown are the means of 5 replicates in each experiment. a E. coli, b E. faecalis, c B. subtilis, d S. aureus Back to article page