"PARKWAY PLASTICS, INC."

Belt-Driven Shaft Keeps Grinding Wheel Stable for Greater Accuracy

Rotifers are well adapted to adverse conditions; when dry, the eggs remain viable for years.

Designed for advanced student experiments to test for quality in waste and drinking water, environmental labs, and aquaculture.

Designed for advanced student experiments to test for quality in waste and drinking water, environmental labs, and aquaculture.

WARNING: CHOKING HAZARD–Contains a small ball and small parts. Not for children under 3 yrs.

A genuine 70 million year old dinosaur egg shell and a 150 million year old dinosaur bone fossil.

Designed for advanced student experiments to test for quality in waste and drinking water, environmental labs, and aquaculture.

Break light into its components wavelengths

This doublet lens system at 10X provides sharp magnification.

Pulley set to expand your TeacherGeek ideas.

Easy to use substrate.

Barbed Tees enhance your ability to design and build hydraulic or pneumatic systems.

These one-piece face shields provide eye and head protection.

Cut and strip all types of wire, cut bolts in a wide range of sizes, and crimp solderless connections with this tool that has cushion grips.

For extremely fine work.

WARNING: CHOKING HAZARD–Small Parts. Not for children under 3 years due to small parts and small balls.