Ultraviolet germicidal lamp sterilization?

by:Tepro     2020-07-25

- - - - - - - - - - - - - - - - - - - Ultraviolet germicidal lamps are commonly used to disinfect the air, surfaces, and water to sterilization. 254 nm wavelength to effectively kill bacteria and viruses, predecessors have made a lot of research, is the fact that there is no doubt that. Ultraviolet sterilization is characterized by broad spectrum, some of the high temperature are hard to kill the virus, in ultraviolet ray can quickly wipe out, this is because the uv sterilization mechanism is different from other methods.

- - - - - - - - - - - - - - - - - - - Ultraviolet (uv) of killing bacteria and viruses associated with ultraviolet irradiation dose, dose irradiation time (= S) X light intensity ( μW/cm2) , exposure dose in theory the general design requirements for more than 30000 mu W/cm2 if ultraviolet radiation intensity is low, as long as the time is long, can achieve the same effect when and strength slightly higher, if the time does not allow for a long time, need to choose the high intensity of ultraviolet lamp. Generally various dose needed to kill bacteria and viruses, illuminate intensity be exterminated in some measure can calculate the irradiation time, to be disinfected objects don't understand, generally need to extend the time of irradiation to ensure the sterilization efficiency. Due to ultraviolet rays can kill cells, therefore should pay attention to when ultraviolet disinfection lamps can't direct illuminate to a person's skin, especially people's eyes, don't look straight tubes, ultraviolet germicidal lamp light because shortwave ultraviolet not through ordinary glass, wearing glasses can avoid injury to the eye. If not narrow-minded injury, usually harmless, just like the sun burned, serious can eye drops or human milk, help recover. On some occasions, do not use ozone tube, when high concentrations of ozone against people.
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