Your Safer Source for Science
All-In-One Science Solution
Your Safer Source for Science
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Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
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Item #: UV-750 

Price: $54.95

Temporarily out of stock; call for availability.

Watch white beads change to bright colors when taken outside!

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Other Options

Item# UV-AST UV-750 UV-20K
Package Size 2-oz, approximately 250 Beads 3,000 Beads 20,000 Beads
Price $6.95 $54.95 $324.95
Enter number of items Temporarily out of stock; call for availability.

Product Details

Watch white beads change to bright colors when taken outside the building! When returned they turn back to white. What causes the change? Humidity? Temperature? Fresh air? Birds flying overhead? The beads contain pigments which react with ultraviolet light from the sun, even on a cloudy day. They also change with most classroom UV light sources. Students can make their own UV light detecting bracelet by stringing the beads on a pipe stem or on a strip of rawhide. Great for teaching UV awareness! Use the beads to test the UV blocking effectiveness of sunblock, sunglasses, windows, etc. Lesson activities are included. Available in six colors, all beads are pale, off-white in the absence of UV light. The ultraviolet beads will cycle back and forth (to bright colors and back again) over 50,000 times! Approximately 250 beads per 2 ounce package.

 

All of our UV beads are the same size. Approximate bead dimensions:
diameter 8.5 mm (5/16") - center hole 3.6 mm (9/64")