Your Safer Source for Science

Since 1977

Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436
Email flinn@flinnsci.com

Cartesian Diver Pump Cap “Fizz-Keeper”

Cartesian Diver Pump Cap Fizz-Keeper
Cartesian Diver Pump Cap Fizz-Keeper

Item #: AP4676

Price: $4.05

In Stock.

Using the Cartesian Diver Fizz Keeper Pump Cap, take the squeeze out of your Cartesian divers! Simply screw the pump cap onto the bottle, pump the cap a few times, and watch as the Cartesian divers sink to the bottom of the bottle!

See more product details

Product Details

Take the squeeze out of your Cartesian divers with this easy-to-use pump cap, commonly known as the Fizz-Keeper. Simply screw the pump cap onto the 2-liter bottle, pump the cap a few times to change the pressure in the bottle, and watch as your Cartesian divers sink to the bottom of the bottle—no more squeezing needed.