Science Museum Hydrophobic Sand

• Multi-coloured neon sand that never gets wet - even under water!
• Each tin contains 30g of Orange, Blue, Green and Purple sand, each in a separate bag.
• This sand has been treated with silicon vapour , giving it non-polar properties, so it cannot bond with water
• Full instructions for use and information on Hydrophobic sand from the Science Museum.
• Add it to water - it never gets wet. Each tin contains 30g of orange, blue, green and purple coloured sand, each in a separate bag. This sand has been treated with silicon vapour giving it non-polar properties so it cannot bond with water and can never get wet. Non-toxic and completely harmless. Contains 4 bags of sand. For ages 6 years and over.

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