What exactly is ultraviolet light?
Ultraviolet light is an invisible light (to humans) but many insects can see it (known as phototactic eye sight). UV light emits at different levels called nanometers (a unit of measurement that is one billionth of a meter). Ultraviolet light is separated into three common spectrums. UVA operates between 315 and 400 nanometers (nm). These are known as black lights and many insect zappers use this UV lamp to attract insects to the zapper because the insects think the light they see is the sun. UVB is used for phototherapy (treatment of skin diseases, for example) and operates between 280 and 315 nm. UVC is used for UVGI (ultraviolet germicidal irradiation) and this is what our units operate at. This light has a wavelength of 100 to 280 nm. Our products operate at 253.7 nm which is the optimal level of UVC light for sterilization of the air, and even water. UV light is present in a fluorescent lamp tube which contains a mixture of 3 mgs of mercury and a phosphor coating. When UV lamps ar
