222nm Far UVC Tube

222nm Far UVC Tube

• Q: What is the wavelength of Far UVC tubes? Why are they referred to as "safe sterilization" devices?

  A: The typical wavelength is 222nm, which falls into the far-UVC band. This wavelength cannot penetrate the stratum corneum of human skin or eye mucous membranes, and only inactivates microorganisms (bacteria and viruses). Therefore, it can be safely used in occupied spaces.

• Q: What is the sterilization efficiency of Far UVC tubes? Which pathogens can they inactivate?

  A: The inactivation rate against common pathogens such as COVID-19, influenza viruses, E. coli, and Staphylococcus aureus can reach over 99.9%, complying with international disinfection standards.

• Q: Can Far UVC tubes be used in occupied spaces like offices and classrooms? Is there a limit on usage duration?

  A: Yes. At compliant power levels (typically ≤20W, installed at a certain height or distance), they can be operated continuously for long periods without time restrictions, making them ideal for public spaces with constant occupancy.

• Q: What is the difference between Far UVC tubes and traditional 254nm UVC tubes?

  A: Traditional 254nm UVC tubes can damage human skin and eyes, so they must be used in unoccupied areas. In contrast, 222nm Far UVC tubes combine high sterilization efficiency with human safety, and can be operated in occupied spaces under specific conditions.

• Q: What is the service life of Far UVC tubes? Will light decay affect sterilization efficacy?

  A: The service life is ≥4,000 hours. With light decay of less than 30% within 4,000 hours, the sterilization efficiency remains stable throughout this period.