Get ready for hands-on tinkering . . with squeaky-clean hands! Harness the power of pumps and switches, and rig up a mechanical soap dispenser that works with the push of a button. Explore the science of peristalsis, then deep-dive into the history of human hygiene — both good and bad!
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Soap Dispenser
Original price was: $39.95.$11.99Current price is: $11.99.
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