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 massive mounted set of 100 rocks and minerals found in the US,
Perform awesome experiments using everyday materials found in any kitchen!
Build your own windmill generator kit by recycling a plastic bottle!
A beautiful desk or bookshelf accessory for the reading fanatic in your family!
This genuine meteorite is great for the rock collector in your family!
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.