Geyser Tube with Caps

Make a 25 foot soda geyser with Steve Spangler's Geyser Tube. Just add the included Mentos mints to a 2-liter bottle of diet soda and run away! Comes with 4 bottle tops allowing you to pick the shape of your stream: Geyser, Fountain, Fan, or Run Away. ...Read more

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Learn the science behind the internet sensation, make your own diet soda and Mentos geyser
Interchangeable caps let you decide what kind of spray you want to make you each time you set off a new geyser
No more wasting soda trying to get all the Mentos in the bottle at one time, this is a fool-proof method for making a 25-foot geyser
Comes with a roll of Mentos but you can try other activators to see what works best, it's all part of the science
Great science fair experiment

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