FIVER Environment Group Co.Ltd

  Have you ever heard that ultraviolet (UV) light can be a biocide for living things? You can find the answer within the following info.   Starting with the history, the study on UV rays and its biological effects began around 1888 when Neils Ryborg Finsen decided to analyze this matter. He proposed that UV rays could kill bacteria. This discovery motivated other inventors to perform further analysis on this subject, including the mechanism of UV rays on microorganisms and applications in biology, medical sterilization, also air and water treatment.   UV (ultraviolet) light is part of electromagnetic spectrum which ranges from gamma rays to radio waves. The short wavelength and high frequency gamma rays are more energetic than radio waves which have long wavelength and low frequency. Therefore radio waves do not give bad effects no matter how long you are exposed to it. On the other hand, the short waves from gamma rays will be dangerous, even deadly.   Of the electr...

  It has been known more than 100 years ago that Ultraviolet (UV) light has a germicidal effect. The natural source of UV light is the sun. It emits about 10% of its energy in the UV region. However, since it is mostly blocked by the earth's atmosphere it has no germicidal effect in our immediate environment, like our home's indoor air quality or our water systems. Ultraviolet is a spectrum of light just beyond the visible range. UV light is divided into four ranges of wavelengths: (1) Vacuum UV from 100 to 200 nanometers, (2) UV-C from 200 to 280 nanometers, (3) UV-B from 280 to 315 nanometers, and (4) UV-A from 315 to 400 nanometers. The UV-C spectrum (200 to 280 nanometers) is the most lethal wavelength for microorganisms, because it disrupts the chemical bonds between the atoms which, in biological terms, results in a "dead" microorganism. This range of wavelengths is also known as the Germicidal Spectrum. The germicidal spectrum is used to destroy bac...