UVC is dangerous to humans. Remember to avoid direct exposure to UVC, especially skin and eyes. It is able to kill all kinds of microorganisms, including drug resistant bacteria.
It has a major limit! UV only works in its light path and can be blocked by objects. Make sure what you want sterilized is directly in line with the UV light. You can minimize this issue by using multiple UV bulbs to generate UV irradiation from different angles. References: You can watch the effect of UV exposure time on E.
Standard Products. Discontinued Products. Agreement FAQs. Find a Distributor. About Us. Who We Are. Who We Serve. Our Quality Control Process. Contact Us. It is convenient to use and no chemicals are needed. Choose your industry to find the best websites for your interests quickly. Products and Solutions. Contact us. UV Disinfection Safe, reliable and environmentally friendly. UV disinfection process Germs in water, in the air and on surfaces are troubling.
Tests with scientific studies confirm the disinfecting effect of UV light. Application areas UV disinfection is effective on surfaces and in the air in a wide range of applications.
Disinfection with intense UV radiation The Heraeus Blog on scientific findings, trends, new products and exciting application examples. UVc has been shown to have the greatest impact on inactivating microorganisms and such is the band used in UV disinfection applications.
UVa and UVb are widely known for their harmful effects on human skin and links to skin cancer exposure to sunlight. When exposed to the energy emitted by UVc at the right intensity for a given amount of time, the DNA or RNA within viruses, bacteria, and other microorganisms is disrupted, making them non-infectious. The time it takes UVc to effectively disinfect is a function of the wavelength being used, the lamp intensity, the type of microorganism being targeted, and the distance from the source.
With a correctly sized UVc lamp in close proximity to a surface, viruses and other microorganisms can begin to be inactivated immediately. Wavelengths nearest nm within the UVc range are the most effective for germicidal applications with sharp drop-offs in efficacy at longer or shorter wavelengths. Indigo blue light has a wavelength around nm which is just beyond the UV spectrum.
There are systems that utilize this kind of light for infection control. We recommend UVc for two types of sanitization applications: air and surface. The most effective places for locating air sanitization lamps are either within the HVAC equipment itself or installed in the space as an upper room fixture. For surface sanitization, the applications are many and each case needs to be evaluated individually. UVc light will inactivate the virus very effectively when it contacts a surface directly, so flat surfaces like counters, elevator walls, etc.
However, a caveat to this is dependent upon the reflectance of the surrounding surfaces. Just as the sun can degrade certain finishes next to a window, repeated and extended exposure to artificial UV can impact materials within a space. This effect should be considered during design. Although UV light is theoretically outside the visible spectrum, upper room UV fixtures do emit some visible blue light.
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