"PARKWAY PLASTICS, INC."

Foam brushes are designed for cleaning lab glass and plasticware.

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

3D Signs ensure marked areas are visible from all angles.

Pale pink felsite, with small sanidine phenocrysts.

Nearly pure, green crystalline forsterite.

Coarse-grained plagioclase and pyroxene with some olivine.

Classic, dark; from the Columbia Plateau.

Sterilizing tote boxes are molded from natural polypropylene, and are suitable for food use.

Two or more magnifiers may be snapped together to produce increased magnification and to illustrate the principles of compound lenses.

Examine the various tissues in vascular bundles found in these vertical section of a dicot and Monocot leaves.

White, fine, massive, opaque to slightly translucent.

Shiny black volcanic glass showing conchoidal fracture and some spherulites.

Gray, fine, friable, with abundant small sanidine crystal fragments.

What Is Making the Block Stop Moving?

This dual magnifier has two lenses for varying magnification.

Bright blue crystalline veins and coatings in a matrix of mixed copper ore.