Hydrophobic sand, 50 g

This unusual sand offers fascinating experiments for kids! Hydrophobic sand is normal sand that has been coated with a substance to make it hydrophobic (water repellent). This prevents water molecules getting through the outer surface layer. Under water the sand can be firmly moulded. Once it is back in the air it dries instantly, regaining its loose, fine-grained texture.

By contrast, the sand is very capable of absorbing oil. This opens up all sorts of possible options for experiments.

• fascinating sand with a water-repellent coating
• can be firmly moulded under water, dries immediately again in the air
• for exciting experiments on material properties

Container dimensions: approx. 5 cm diameter, 5 cm high

Recommended age: from age 8