Sun Activated Photochromic Powder Pigment PINK changing to VIOLET-BLUE when exposed to UV Light Perfect for Color Changing Slime Science Experiments
KWD 9.500
Atlanta Chemical Engineering Temperature Activated Thermochromic Powder Pigment Black Changing to COLORLESS (Translucent White) at 158F/70C Perfect for Electronics Overheating Indicator
KWD 9.500