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Super Absorbent Crystals Poly-acrylate crystals start small....and get huge! Also known as "water jelly crystals", many people don't realize that they're re-usable; just let 'em dry out to use again. From the Manufacturer:"These incredible pebble-sized polymer crystals mysteriously turn into LARGE pieces of gel-like goo when you add water. These crystals absorb 150-300 times their volume in water, and they're reusable. The instructions are packed with intriguing activities that make great hands-on activities or science projects for students.Put these tiny nuggets in water and watch them soak up to 300 times their weight in water! The jiggly water rocks look like shimmering chunks of ice. It's a non-toxic polymer that absorbs water in a most unique way. Use them in the ground for plants or in a dish for some amazing science!" Includes Ages 6 and up. List Price: $2.99
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