Commonly used for forensics and medical applications, 365nm LED lights are more effective than 395nm LED lights you find at dollar stores.
Uses of this frequency include: Ultraviolet Fluorescence Excitation, Sensor Light, UV / INK Curing, Spotting Germs, Checking UV inks in currency and ID's, Checking hand stamps at clubs, Examining artwork and glasswork for hidden repairs, Find urine stains and more.