Item #EC-EDU-3070 Water Clock - Science Lab Kit Water Clock - Science Lab Kit, Tree of Knowledge - Go Lab Series: Water Clock Make a clock that can work just on tap water! You will never needed batteries again! Also works on a variety of household materials such as: cola, fruit juice and even ketchup! Try other materials and see how the clock never stops. This is the best timekeeper you will ever have. Ages 8 and up Item Status In Stock - Ships Next Business Day Explain this status? Pricing & Selection Price: $8.95 Qty:

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