Grow dozens of colorful crystals, including two types of crystals that glow in the dark. Experiment with growing a variety of crystals from a potassium alum salt solution. Add strontium aluminate to your crystal solutions to make phosphorescent crystals that charge up in the light and then glow in the dark on their own, slowly emitting the stored light energy. Or try adding one of two ultraviolet-reactive pigments, pink and greenish-yellow, to your crystals to create fluorescent crystals, which glow in stunning colors under the light from the included ultraviolet flashlight.
This kit is thoroughly tested and nontoxic. A full-color, 32-page experiment manual guides your experiments in the chemistry of crystals and glowing phenomena.