Someone asked: can't ultraviolet light pass through glass? Why can ultraviolet light have ultraviolet lamp tubes?
First of all, ultraviolet light can pass through the glass, but it will be weakened in part.
Secondly, good ultraviolet lamps are made of quartz glass, for ultraviolet light The impact will be much smaller than the general glass, and our company's ultraviolet lights are made of quartz glass tube, quality assurance!
Ultraviolet light is usually divided into long, medium and short waves by wavelength:
Long wave ultraviolet (UVA;) with wavelength 400~320nm
Ultraviolet radiation of medium Wave with wavelength of 320~275nm is abbreviated to UVB;
Short wave ultraviolet (UVC,) with wavelength 200~275nm is also called shortwave sterilized ultraviolet (UV). It has the weakest penetration ability and can not penetrate most transparent glass and plastics. The shortwave ultraviolet (UV) contained in sunlight is almost completely absorbed by the ozone layer.
Wavelength 100~200nm UV abbreviated as UVD, also known as vacuum ultraviolet.
In general, the visible light transmittance of 3mm transparent flat glass is 89%, and the transmittance to 300~380nm ultraviolet light is 70%.UVA band: wavelength 320 ≤ 400 nm, also known as long wave black spot effect ultraviolet light. It has a strong penetration force, can penetrate most of the transparent glass and plastic.