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            Rayvio | UV Technology
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            UV Technology

            UV LED Technology

            Ultraviolet light occurs naturally; it is a portion of the electromagnetic spectrum produced by the sun. As with visible light, it can be produced using both conventional mercury lamps and LED technology. Ultraviolet light is used in a broad range of applications including material curing, healthcare, and disinfection and sterilization of air, surfaces, and water.

            Mercury lamps have been the most widely used UV light source but today, smaller, more robust and toxin-free, UV LEDs are available and capable of replacing mercury lamps in many solutions. The UV LEDs’ small size makes it possible to incorporate the technology into a broad range of consumer applications that help make people healthier and feel better.

            UV Light Emitting Diodes

            UV LEDs use the same core semiconductor processes that are used to produce LEDs for illumination. They offer all the benefits of LEDs: long life, no mercury, no lead, small and robust and the germicidal benefits of ultraviolet light. However, none of the light emitted from the LEDs is in the visible portion of the electromagnetic spectrum.

            UV LED Technology Advantages

            • EFFECTIVE
              Kills germs at the DNA level - even superbugs
            • SAFE
              No chemicals, chemical residue, or toxic elements including mercury
            • INTELLIGENT
              Can be seamlessly integrated with digital technology platforms
            • ROBUST & RELIABLE
              Its semiconductor technology is rugged by design and naturally long-lived
            • PORTABLE
              It is extremely small and can be battery powered for use anywhere, anytime

            About UV Light

            Ultraviolet light is a form of electromagnetic radiation just like visible light, x-rays, and infrared light. The ultraviolet portion of the electromagnetic spectrum is between 10nm and 400nm. Visible light is on the spectrum from 400nm to 700nm and x-rays are in the range of 0.01nm to 10nm.

            The ultraviolet spectrum is typically divided into four segments: Vacuum UV, UVC, UVB, and UVA.

            • Vacuum UV – 10nm to 200nm
            • UVC – 200nm to 280nm
            • UVB – 280nm to 315nm
            • UVA – 315nm to 400nm

            The Microbial Region

            UVC light in the 200nm to 280nm range has been considered germicidal. Many assumed that 254nm was the optimum wavelength for disinfection but this was primarily due to the fact that peak UV light from mercury vapor lamps is 254nm. With no alternative solutions to the mercury vapor lamps little consideration was given to the effect of other wavelengths. However, with the advent of LEDs that can be ‘tuned’ to specific narrow wavelength bands, scientists have expanded their testing and analysis to truly understand the range of wavelengths that are effective for disinfection, sterilization and purification.

            Scientists now describe a germicidal range that extends to 300nm in the UVB range. They have proven that wavelengths above 280nm are in-fact effective for disinfection and sterilization and that different germs respond to different wavelengths of ultraviolet light.

            Germicidal wavelengths in the 200nm – 300nm range

            Wavelength, time, and intensity are they key factors in determining germicidal effectiveness. For example, two systems, one using UV light at 270nm and one at 280nm could have the same germicidal effectiveness. To achieve parity, the 280nm system may require additional time or additional power (intensity) and possibly exposure time.

            Germicidal Mechanism

            The DNA, RNA and proteins of microorganisms absorb the ultraviolet light from RayVio’s UV LEDs. By absorbing this energy, a photochemical reaction is triggered that breaks the DNA’s chemical bonds and inactivates the bacteria, virus or fungi.?As a result, the germs can no longer reproduce or grow. The degree to which the germ population is rendered ineffective is usually reported publicly in the form of a percentage such as 99% or 99.9% effective.

            Germicidal Effectiveness

            The degree to which something is disinfected is a variable that can be measured. The typical convention is to claim that something kills 99% of germs or possibly 99.9% or more. The table below shows the standard reference from the Centers for Disease Control for reporting effectiveness. The CDC considers 99.9999% effective as sterilized.

            Germicidal Effectiveness Levels

            Reduction levels of one million bacteria on a medical device are shown below.

            90% reduction - 100,000 bacteria remain.
            99% reduction - 10,000 bacteria remain.
            99.9% reduction - 1,000 bacteria remain.
            99.99% reduction - 100 bacteria remain.
            99.999% reduction - 10 bacteria remain.
            99.9999% reduction - 1 bacterium remains.

            RayVio’s XD, XR and XP Series UV LEDs can be used to achieve 99.9999% effectiveness.


            TRUVIOLET is the most advanced and effective UV LED technology available. It was designed and developed to kill germs everywhere, including in water, in the air and on surfaces. At the core of TRUVIOLET is digital UV LED technology. While UV light has been used for disinfection for more than a century, TRUVIOLET makes it truly safe for the light to be used at home as well as in professional settings and it eliminates the use of mercury which is better for the environment and people alike. TRUVIOLET is compact and powerful ultraviolet technology that is fast, convenient, and offers absolute control that improves the experience for the end-user.

            TRUVIOLET makes it possible for health and hygiene companies to incorporate UV LED technology that is proven to be effective at 6-log rates (99.9999%) and can be digitally controlled and packaged with other sensors and electronics. TRUVIOLET is more than an LED; it’s a microchip of health – one that can change the world in sixty seconds.

            UV Technology Advantages

            RayVio’s UV light is highly effective against a wide range of microbes, including antibiotic and chemical resistant ones that cause hospital acquired infections (HAI)

            UV light does not change the odor or taste of water or air that has been disinfected

            RayVio’s small, compact UV LED sources enable end-use locations, like faucets, and portable applications

            RayVio’s UV LEDs do not contain mercury or other hazardous substances that are found in other UV light sources