Books and products we recommend: Vol.2 No.3 Exhibiting Without Damaging Collections $5.00 [Add to Cart] UV Detecting Beads The beads contain pigments that react with ultraviolet light from the sun, even on a cloudy day, turning them from white (no UV) to colored. Make your own UV light detecting bracelet by stringing the beads on a pipe stem or on a strip of rawhide. Great
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