Nature of Liquid & Gas

“Charles Law Mechanics of Gas” Can with Lid

Demonstrate the forces of air pressure by boiling water in the can and allowing to cool. See the can get “crushed” right before your eyes. Metal can with lid, 1-1/4" opening. More.

Magdeburg Hemispheres – Cups

Two rubber vacuum cups with handles can be used as a simple but effective demonstration of the great force of air pressure. When the edges are placed together and the cups compressed to expel the trapped air, they cannot be easily separated by a straigh... More.

Boyle’s Law Apparatus

This apparatus allows students to investigate the elastic properties of a gas enclosed in a calibrated airtight syringe by subjecting the confined gas to various loads. The syringe is built into a sturdy wood base. The wood top is large enough to suppor... More.

Surface Tension of Water

Explain the principle of high surface tension as water acts like a membrane stretched across the surface preventing the sulfur particles from sinking. A wetting agent lowers the surface tension and allows the particles to fall through the surface to the... More.

Dialysis Membrane Tubing – Flat Width 1", 50 ft. Long

Made of seamless, regenerated cellulose. An excellent membrane designed for laboratory dialysis and routine osmosis/diffusion experiments. Pore size MD-44-14. More.

Separating Mixtures by Density

A great hands-on activity for demonstrating buoyancy and density. The set contains small pellets made of four different polymers with different densities. The mixture can be separated out using flotation. One type of pellet will float in tap water, ... More.

Spouting Cylinder

Demonstrates that the pressure of a liquid depends on the depth/height. Huge, metal construction. Dimensions: 16-1/2" H x 3" dia. Base is 5-3/4". Baked stoving hammertone finish. More.

Dialysis Membrane Tubing – Flat Width 1-3/4", 50 ft. Long

Made of seamless, regenerated cellulose. An excellent membrane designed for laboratory dialysis and routine osmosis/diffusion experiments. Pore size MD-25-14. More.

Surface Tension of Bubbles

Easily study soap films and bubbles on metal frames and notice that soap film always adopts the configuration with the lease surface area. You can also measure the surface tension of the water. Includes 6-1/2" (16.5 cm) diameter trough for soap ... More.