Color Changing UV Beads (Approx 240)

Expose them to sunlight and they immediately change from clear to colored. Cover them up and within minutes they are clear again. The UV Beads contain

UV Color Changing Beads - 250 Beads Assorted Colors

Ultraviolet Detecting Beads

UV Beads, Change to Blue, Ultraviolet: Educational Innovations, Inc.

Uv Color Changing Beads

UV Detecting Beads Pack, Health Edco

Miraclekoo 1000 Pcs UV Beads Color Changing Beads UV Reactive Plastic Luminous Pony Beads, Glows in The Dark Bead, Fun for Jewelry/Bracelets Making : Arts, Crafts & Sewing

Miscellaneous Avogadro's Lab Supply

Uv Color Changing Beads

Watch white beads change to purple when taken outside the building! When returned they turn back to white. What causes the change? Humidity?

UV Beads, Change to Purple