Before buying a UV lamp for indoor disinfection, you need to understand these points first

In addition to 75% alcohol and various disinfectants, there is actually a good disinfection method that uses ultraviolet light for disinfection. Of course, like masks and disinfectants, UV lamps are also scarce products. It is difficult to buy them in a short time. But it’s okay. Before that, everyone needs to be aware of the things that need to be paid attention to when using UV sterilization lamps.

The main working principle of the ultraviolet lamp is to use the released ultraviolet rays to inactivate bacteria and viruses to achieve the effect of sterilization and disinfection. As for the specific working principle of the ultraviolet lamp, the light source of the ultraviolet lamp will be mentioned. At present, there are mainly two light sources: gas discharge light source and solid-state light source.

The most common UV lamps we can buy are gas discharge light sources, mainly low-pressure mercury lamps. Its working principle is the same as that of a fluorescent lamp, except that the mercury vapor in the lamp tube generates ultraviolet rays by energizing the mercury atoms in the tube. Low-pressure mercury vapor generally mainly produces 254 nanometer UVC ultraviolet rays and 185 nanometer UVD ultraviolet rays.

After talking about the disinfection principle of the ultraviolet lamp, we will consider the specific choice next. Generally speaking, 1 cubic meter of UV lamp should not be less than 1.5W. According to this calculation, assuming your bedroom is 20 square meters and the floor height is 3 meters, then a simple calculation can know that you need to configure a 40W ultraviolet light for your bedroom.

Another thing to note is the material of the tube. At present, there are two main glass materials for low-pressure mercury lamps on the market: quartz glass and high boron glass. The transmittance and radiation of quartz glass are higher than those of high boron glass. The penetration ability of short-wave ultraviolet rays is extremely weak, so be sure to choose quartz glass.