Discover Science Vortex Valve

On back order
Discover ScienceSKU: 34092

    • Connects two large soft drink bottles.
    • When one is half filled with water, with a flick of the wrist a tornado in a bottle is created.
    • Scientific fun.
    • Now supplied with two 'o-ring' seals to protect against leakage.

Sale price$6.95
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