Description

Not sure if you're getting too much sun? Use this handy detector. (Only works during daylight hours.) This detector contains UV Detecting Beads inside of a clear plastic bottle preform. When the detector is shielded from UV radiation, the beads are white. When exposed to UV radiation (between 360 and 300 nm wavelength), the beads turn purple. This detector can change color thousands of times. Our favorite workshop give-away! ~12 cm (5") long Cap colors may vary.