This is a GENUINE GermGuardian® Bulb. It is important to only use genuine Guardian Technologies™ replacement parts to maintain product performance and warranty. All parts that are not genuine will void the warranty.
What is UV-C Light? UV-C is part of the ultra-violet light spectrum that is filtered out by the earth's atmosphere. The "C" stands for the particular frequency of UV light that kills germs.
Why is UV-C Light so effective? UV-C light is highly effective at penetrating thin-walled germs like viruses and bacteria. The light alters the genetic structure of the germ and they die.