An ultra-violet (UV) trans illuminator is a standard piece of equipment
used in laboratories for visualization of target DNAs and proteins. The UV
transilluminator works by emitting high levels of UV radiation through the
viewing surface. The key application for a UV transilluminator is for
visualization of DNA and protein agarose and polyacrylamide gels after
electrophoresis. Gels can be directly placed onto the UV transilluminator;
wavelength will vary on your particular application.