Hand Boiler

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Price: $8.00    

Product Description

Heat from your hand increases the vapor pressure of the liquid in the lower bulb, forcing it into the upper bulb. An impressive display of vapor pressure and the force gases exert.

Hand Boiler Review

I did not buy this item but own one.
I wish it worked.

I opened the package and gripped the bottom with my hand. Unfortunately, my hands are not hot enough to make the liquid "boil". I do know it works because my friend can make it boil.
It is a very good item overall. Just be aware it may not work if your hands are not hot enough.

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