A Far UV 222nm disinfection lamp is a type of ultraviolet (UV) light that emits light at a wavelength of 222 nanometers (nm), often referred to as UVC light. This wavelength is shorter than the traditional UVC wavelength (around 254nm) used for disinfection purposes but is considered safer for humans while still being effective at killing bacteria, viruses, and other pathogens.

Here are some key features of Far UV 222nm disinfection lamps:

1. Wavelength (222nm): The 222nm wavelength is specifically effective in breaking down the DNA or RNA of microorganisms, rendering them incapable of replication and causing them to die.
2. Safety for Humans: Unlike conventional UVC light (typically in the 254nm range), Far UV 222nm is considered to be safe for human exposure because it cannot penetrate the outer layer of the skin or the eyes, thus avoiding harm to tissues. This makes it suitable for use in occupied spaces for continuous disinfection.
3. Applications: These lamps are used in various environments like hospitals, schools, offices, public transportation, and even home settings to continuously disinfect air, surfaces, and objects without posing a health risk to people.
4. Effectiveness: Far UV 222nm lamps are proven to inactivate a wide range of pathogens, including bacteria, viruses, and fungi, without the need for chemical disinfectants.

This technology is gaining popularity, especially in the context of the COVID-19 pandemic, for its ability to provide a continuous, chemical-free disinfection method in occupied spaces.