HOW DOES 3-STAGE UV FILTRATION WORK?
Just below the smallest wavelength of visible light is a band called the Ultraviolet Spectrum. The “AQUAPRO” (UVC) of the Ultraviolet Spectrum is 100 – 280 nanometers. Light at this wavelength destroys microorganisms including bacteria and viruses. The unit operates at 253.7 nanometers, which is the most effective wavelength for germicidal action. Microorganisms are destroyed/sterilized by UV light on contact–this means that UV light must strike the organism to be effective. Since UV light will not penetrate anything but a clear liquid, to maintain clarity of your water , each comes with two prefilters.
PRE-FILTRATION IS REQUIRED BEFORE UV STERILIZATION
The first prefilter screens out larger size substances. It is usually a 5 micron pleated filter or 1m spun filter. The second filter is a .5 Carbon Block filter that strains out remaining fine sediment plus chlorine and other chemicals while eliminating any existing odors or unpleasant tastes in your water. It also filters parasites such as Giardia and Cryptosporidium cysts. Those cysts are too large for the UV light to penetrate.Inside the 304 stainless steel disinfection chamber, the ultraviolet bulb is housed in a special quartz sleeve (tube) that allows the bulb to emit energy at the 253.7 nanometers wavelength. The sterilizing power of the unit is defined by how many microwatts can be applied to the water per second. At a flow rate of 4 gallons per minute, the aquapro radiates 30,000 microwatt seconds per square centimeter required for UV disinfection equipment. The same UVC dosage is true of the Aqua Pro Only approved filters should be used.