"PARKWAY PLASTICS, INC."

Spinel group; iron-black, massive; natural magnet.

We sell many different sizes of dropper assemblies, varying by size, capacity, and the size of threaded neck they are designed to fit.

Ideal for the colligate biological sciences student.

Spinel group; black, dull metallic luster; common iron oxide.

High Quality for the Classroom.

Abundant small black phenocrysts in a gray to brown matrix.

Light gray, fine small clasts.

Gray to white, coarse crystalline, carbonate rock.

They are made from high quality TPX, making them easy to read with excellent contact clarity.

Inexpensive yet accurate.

Twelve of the most widely used weights on a rack for convenient storage and transport.

This apparatus makes it easy for students to learn about Boyle's Law.

With the Resonance Apparatus, students investigate the effect of frequency on wavelength.

Useful for individual or group study of molecules, these model sets offer an interactive learning opportunity.

Cool and colorful dragons liven up genetics lessons.

These pocket magnifiers are economical enough to outfit an entire class.