To achieve the inactivation effect of bacteria in the air, the closer the ultraviolet lamp tube is to the disinfected object, the faster and more bacteria are killed. Within the range of ultraviolet radiation, the bacterial mortality rate can be guaranteed to be 100%, with no bacteria escaping.

Its sterilization principle is to irradiate microorganisms such as bacteria and viruses with ultraviolet light to destroy the structure of their DNA (deoxyribonucleic acid) in the body, causing them to immediately die or lose their reproductive ability. Quartz ultraviolet lamps have advantages, so how to identify authenticity. The bactericidal ability of ultraviolet rays in different bands varies. Only shortwave ultraviolet rays (200-300nm) can have the bactericidal ability against bacteria, with the strongest bactericidal ability in the range of 250-270nm. The cost and performance of ultraviolet lamps manufactured from different materials also vary. The really high intensity and long-life UV lamp must be made of quartz glass, which is also called quartz Germicidal lamp. It can be divided into two types: high ozone type and low ozone type. High ozone type is generally used in the disinfection cabinet, which is also a significant feature of quartz UV lamp compared with other UV lamps. In addition, it produces high UV intensity, which is more than 1.5 times that of high boron lamp, and the UV Radiant intensity has a long life. The most reliable resolution method is to use the 254 nm probe of the ultraviolet Irradiance meter to measure. With the same power, the quartz ultraviolet lamp has the highest ultraviolet intensity at 254 nm. Secondly, there is a high boron glass ultraviolet lamp. The ultraviolet light intensity of a high boron glass lamp is easily attenuated, and after several hundred hours of lighting, its ultraviolet light intensity significantly decreases, dropping to 50% -70% of the initial level. In the user’s hands, although they see that the light tube is still on, it may no longer work. The degree of light attenuation of quartz glass is much smaller than that of high boron lamps. Lamp tubes coated with fluorescent powder, no matter what type of glass they are made of, cannot emit short wavelength ultraviolet radiation, let alone ozone. This is because the spectral lines converted by fluorescent powder have a wavelength of at least 300 nm. Mosquito killing lamps are often seen in disinfection cabinets, which can only produce 365nm spectral lines and a portion of blue light. Their function is not only to attract mosquitoes, but also to have no disinfection effect at all

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