Bactericidal irradiators are used in medicine for air disinfecting of rooms at medical organizations, stations of blood transfusion, children's institutions. They are also used for air disinfecting at enterprises of food-processing industry, public catering, and at organizations of foodstuff trade. The complete set of an irradiator includes either home-produced bactericidal lamps ДМБ or foreign bactericidal lamps TUV (PHILIPS), radiating rays of ultra-violet light with wavelength of 254 nm.