Growing Spheres

SKU: TCH-GROUP-1892688
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Place these hard crystals in water and they expand about 300 times, producing gel-like spheres. Students love to feel the slippery, spherical gel! The Regular size starts with a diameter of about 2 mm and ends with a diameter of about 14 mm. Ask students to determine the change in volume, using V = πr3. Great for starting seeds and growing plants so that the roots can be seen! Can be tinted using food coloring. The polymer is similar to our super-absorbent, polyacrylamide polymer (GB-5B and GB-3) and can be dried and reused. Small (~1 cm expanded), Regular (~1.4 cm expanded) or Jumbo (~3.3 cm expanded)! (Each package contains 50 grams.)
Item # Style Size Grams # of Spheres
GB-702 Small ~1 cm (0.4") 50 ~3000
GB-710 Regular ~1.4 cm (0.55") 50 ~2500
GB-730 Jumbo ~3.3 cm (1.3") 50 ~870

Adult supervision required. This is not a toy. Do not ingest.
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A 25% handling charge is levied against all authorized returns except those due to our error. Unauthorized returns are subject to a 40% handling charge. Damages & defects must be reported to us within 14 days.
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