Can UVC ultraviolet lamps be used for sterilisation?
The current ultraviolet disinfection technology system is undergoing a critical transition from mercury-based light sources to semiconductor light sources. Traditional low-pressure mercury lamps, with their mature 254 nm ultraviolet emission characteristics, have long dominated more than 90% of the water treatment disinfection market, but they face systematic elimination pressure under the framework of the Minamata Convention. The market is urgently seeking a safe and reliable ultraviolet light source. Meanwhile, breakthroughs in the bandgap engineering of third-generation semiconductor materials (AlGaN) have enabled UVC-LEDs to achieve photoelectric conversion efficiencies exceeding 8% and lifetimes exceeding 10,000 hours. Their modular design also supports custom irradiation layouts for fluid channels. Compared to traditional mercury vapor ultraviolet lamp solutions, UVC LEDs demonstrate a significant technological advantage.
How does ultraviolet light disinfect?
Ultraviolet light (UVC band) causes photochemical damage to the nucleic acids of microorganisms. When microorganisms are exposed to ultraviolet light, the biological activity of the cell's nucleic acids is affected. However, some bacteria can repair their damaged structures through light-assisted mechanisms. With the same ultraviolet dose, high-intensity, short-duration or low-intensity, long-duration irradiation methods can be used to achieve sterilisation, ensuring the health and safety of users.
What should be considered when buying an ultraviolet lamp?
When purchasing an ultraviolet disinfection lamp, prioritise models with an effective disinfection wavelength of 253.7 nm UVC, and ensure they have safety features such as human body sensing and delayed start. Check for certifications such as CE, FDA, or CQC according to the target market, select the appropriate power level for the intended use, and pay attention to the lamp life and after-sales warranty.
