Study on bactericidal effects of ultraviolet rays in vitro

ABSTRACT

Having studied in vitro the effect of UVR on the two species of microorganisms which are most common as agents of surgical infection, we realized the closer the distance from the irradiation lamp and the longer the irradiation time, the stronger the bactericidal effect of UVR. When UVR is applied for air disinfection within the distance of more than 2 meters from the sunlamp irradiation, it can also reduce significantly the number of microorganisms in the air. It is due to the fact that there is a continuous air exchange between the upper and the lower part of the room. Previous studies and the experiments on petri dishes show that the use of UVR for cleaning infected wounds and preventing infection is an effective, simple and safe measure: