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Wasn’t there another issue with UV light disinfection where it creates ozone or something?
by mountainriver 5y ago
Wasn’t there another issue with UV light disinfection where it creates ozone or something?
- solarmist 5y agoYup, looks like “ The Ultraviolet spectrum has four wavelengths, (see illustration below), labeled: UV-A (400 to 315 nm); UV-B (315 to 280 nm); very high energy and destructive UV-C (280 to 200 nm); and Vacuum UV (200 to 100 nm). Only this last wavelength, Vacuum UV, is capable of producing ozone.” https://uvresources.com/the-ultraviolet-germicidal-irradiation-uv-c-wavelength/ https://uvresources.com/the-ultraviolet-germicidal-irradiati... Don’t know much about it though.
- hausen 5y agoNot in significant quantities. Another study also using Far-UV excimer lamps [1] measured levels of less than 0.005 ppm, which is far below the 0.05 ppm maximum allowed by the FDA for medical devices [2]. [1] https://www.nature.com/articles/s41598-018-21058-w https://www.nature.com/articles/s41598-018-21058-w [2] https://www.epa.gov/indoor-air-quality-iaq/ozone-generators-are-sold-air-cleaners https://www.epa.gov/indoor-air-quality-iaq/ozone-generators-...
- bawolff 5y agoJust being a factor of ten away from being "dangerous", is not exactly what i would call "far"