Booklet of 100 economy pH paper testing strips with a 1 to 14 color comparison chart. Great for testing acidity and alkalinity of liquids.
This superb chemistry set features 350 mind-boggling experiments!
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
Learn all about the science of light, optics and visual perception with this wonderful kit!
This black scorpion specimen is great for the classroom setting!
See the constellations visible in the Northern Hemisphere on this watch!
This microscope is so versatile you can even take it with you on a job site!