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UVC Tube is actually a kind of low pressure mercury lamp. The low-pressure mercury lamp is activated by the lower mercury vapor pressure (<10-2Pa) to generate ultraviolet light. There are two main spectral lines: one is 253.7nm wavelength; Anothe one is 185nm wavelength. 253.7nm&185nm are both invisible ultraviolet light to the naked eye.
The UVC Tube does not need to be converted into visible light, and the wavelength of 253.7nm can play very good on sterilization. Because there is a rule in the absorption spectrum of light waves by cells. The ultraviolet rays at 250 ~ 270nm have the largest absorption, and the absorbed ultraviolet rays actually act on the genetic material of cells, namely DNA, which plays a photochemical role. The energy of ultraviolet photons is absorbed by the base pair in DNA, make bacteria die immediately or cannot reproduce off spring to achieve the purpose of sterilization.

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