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What are UV-A and UV-C lights?

April 22, 2023
Ultraviolet (UV) light is an electromagnetic radiation that is invisible to the human eye. There are different types of UV light, including UV-A, UV-B, and UV-C. In this article, we'll be discussing what UV-A and UV-C lights are and their uses.

UV-A Light:
UV-A light has a wavelength range of 320 to 400 nanometers (nm) and is commonly referred to as "black light." It is the most prevalent form of UV radiation that reaches the earth's surface. UV-A light is often used in various industrial applications, including fluorescence inspection, counterfeit detection, and non-destructive testing. It is also used in entertainment settings, such as in clubs, where it is used to make fluorescent objects glow in the dark. However, UV-A light is not effective in killing bacteria or viruses.

UV-C Light:

UV-C light has a shorter wavelength than UV-A light, ranging from 100 to 280 nm. UV-C light is also known as germicidal UV, as it is effective in killing bacteria, viruses, and other microorganisms. UV-C light is commonly used in hospitals, food processing plants, and water treatment facilities to disinfect surfaces and air. UV-C light is also used in HVAC systems to prevent the spread of airborne diseases. While UV-C light is effective in killing bacteria and viruses, it is harmful to human skin and eyes and should only be used in controlled settings by trained professionals.




In conclusion, UV-A and UV-C lights are two different types of ultraviolet radiation with unique properties and uses. While UV-A light is commonly used in industrial and entertainment settings, it is not effective in killing bacteria and viruses. UV-C light, on the other hand, is an effective germicidal tool but is harmful to human skin and eyes and should only be used by professionals. Understanding the differences between these two types of UV light can help you make informed decisions when selecting UV-based products or services.

The above content is provided by WOSEN. WOSEN is a professional manufacturer and supplier of Led Flood Light, Led Street Light, Led Solar Light, etc. For more information, please visit https://www.wosenled.com/ or contact admin@wosenled.com or WhatsApp +86-13425434349
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