UV-C light is used in hospital settings to sterilize surfaces. It is an effective non-contact, moisture free germicide that works by breaking down the DNA, RNA, and proteins viruses and bacteria are made from. This makes them unable to reproduce.
UV-C is also used to disinfect water, air, fruits, vegetables, surgical utensils, tablet computers, toys and a variety of surfaces. Studies have shown that UV-C can be effective against viruses, foodborne pathogens, natural microbiota, molds, and yeasts.
UV works only in direct lines. If the surface you need to sterilize is behind a shadow or covered with grime it won't be sterilized. Make sure to remove any built up dirt or grime before use. If your item has some hidden surfaces that aren't fully esposed to the light, rotate it and do multiple exposures.
UV light is dangerous to humans (ever had a sunburn?). Luckily UV-C is mostly filtered out by the atmosphere, but per watt it's going to destroy organic matter more effectively than the UV-A and UV-B that causes sunburns. Don't expose your body to it, especially your eyes. Where a sunburn from UV-B might take an hour, the same intensity of UV-C could burn you in seconds.
Ideally you should wear long sleeves, gloves, and safety glasses rated for UV-C when using the sterilizer. Even better would be to mount it inside a light-proof box.
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