Click to expand Tap to zoom Hydrophobic Sand Test Tube Experiments by Heebie Jeebies Save Liquid error (product-badge line 32): -Infinity% $6.50 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This amazing sand repels water so it always stays dry! Great for learning about hydrophobic substances. Assorted colours.