You can use this rubber stopper to contain liquid in test tubes and flasks. Fits tightly to prevent chemical leaks. Highly recommended for use in the science classroom or when displaying a science project!
A combination of three of our great discovery toys, all in one package!
See the solar system in action!
Defy gravity with this cool balancing eagle!
Easily assemble a working alarm motion detector!
Build over 60 projects with this deluxe version of the Snap Rover kit!
Ever wonder how to survive in the wilderness? These cards can help!
At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.