Absorption Characteristics of Far-UVC Light in Water vs. Air
Far-UVC absorption in water is significant. Theoretical values are ~70% absorption per meter, but this seems to be true only for clean water (i.e. distilled, demineralized, and filtered). We have done some quick tests that suggest 50% absorption in ~5-10 cm for tap water. This means that Far-UVC is less efficient in water than in air.
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