A set of 10 pH Buffer Powder packets. Includes 5 pH 4.00 packets and 5 pH 6.86 packets. These are used to calibrate pH meters, and can also be used to monitor pH levels in aquariums or swimming pools.
The Star-Ball Magnetic Puzzle is the perfect creativity tool for innovators, artists, writers, students, and you!
Build a magnetic levitating train with this science fair project kit!
Check out this high-quality gyroscope!
View the glory of space with this hi-tech telescope set!
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
This magic bird defies gravity before your very eyes!
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