Ultraviolet Light Detecting Beads UV-AST (assorted)Book - 2006
UV sensitive beads contain a pigment which changes color when exposed to ultra violet light from the sun or other UV sources.
Publisher: Norwalk, Conn. : Educational Innovations, c2006.
Characteristics:  beads :,white, plastic ;,in plastic ziploc bag 18 x 11 cm. +,1 activity pamphlet.
Alternative Title: Ultraviolet beads [toy]
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