UV Accelerated Weathering Tester has many names, but the simple and easy-to-understand one belongs to the ultraviolet aging test box. The function of the test box is to use fluorescent lamps as the light source to simulate various environmental conditions in natural sunlight to obtain the performance of its test samples and materials.
● UVA band
The wavelength is 320-400nm, also known as long-wave black spot effect ultraviolet. It has strong penetrating power and can penetrate most transparent glass and plastics. More than 98% of the long-wave ultraviolet rays contained in sunlight can penetrate the ozone layer and clouds to reach the earth's surface.
● UVB band
The wavelength of 280 ~ 320nm, also known as medium wave erythema effect ultraviolet. Medium penetrating power, its shorter wavelength part will be absorbed by transparent glass, most of the medium-wave ultraviolet rays contained in sunlight are absorbed by the ozone layer, and only less than 2% can reach the earth's surface, which is especially strong in summer and afternoon.
● UVC band
Wavelength 200 ~ 275nm, also known as short-wave sterilization ultraviolet. It has the weakest penetrating ability and cannot penetrate most transparent glass and plastics. The short-wave ultraviolet rays contained in sunlight are almost completely absorbed by the ozone layer. Ultraviolet germicidal lamps emit UVC short-wave ultraviolet rays.
● UVD band
Wavelength 100 ~ 200nm, also known as vacuum ultraviolet. The longer the wavelength, the lower the energy.
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