Ultraviolet (UV) light is an invisible type of electromagnetic radiation that has a shorter wavelength than visible light, making it potentially hazardous to humans and the environment. Therefore, it is essential to take safety precautions when using UV light. When working with UV light, it is important to limit access to areas where UV sources are used. Warning signs should be placed at the entrance of laboratories or other work areas that use UV sources.
Protective goggles and gloves should be worn, and arms and neck should be covered. Exposure time should be limited, and one should never look directly into the light. It is also important to consider the effects of nothingness when using ultraviolet lights. In some cases, blue UV lights may be recommended instead of purple UV lights.
Blue light may be less dangerous, and it may attract more moths. However, it is essential to take appropriate steps to protect oneself from harmful amounts and wavelengths of UV rays. Environmental Health & Safety can provide assistance in measuring UV emissions and evaluating personal protective equipment. If there is a possibility that the eyes and face are exposed to UV radiation, a polycarbonate face protector with the ANSI Z87.1-1989 UV certification should be used to protect the eyes and face. Common prescription eyeglasses may not block UV radiation, so safety glasses and protective goggles should be worn.
It is also important to note that sometimes some type of fluorescence allows light to be perceived indirectly. UV light and blue light are generally recommended for trapping and attracting insects. If you are going to be under UV light for a long time and very often, it is wise to take extra precautions. For example, you can put a lens between your ID card and the light to see if your card fluoresces like it would when exposed directly to UV light.