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Item #: CD-4 

Price: $4.95

In Stock.

Perfect to use with Cartesian Diver experiments.

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Product Details

Designed to keep the carbonation in plastic soda bottles, these pumps are perfect for Cartesian Diver experiments. Simply place your diver in a plastic soda bottle filled with water, screw on a Fizz-Keeper Pump cap, and pump away! With this pump, even young children with small hands can easily operate the diver.