Nature of Liquid & Gas

Harbottle

Help students understand the meaning of fluid pressure and pressure reduction. A Harbottle is a round glass container with a balloon inside and stretched over its opening. A hole in the flattened base is fitted with a rubber stopper. Students are amazed... More.

Magdeburg Hemispheres – Spheres

Astonish your students with the force of air pressure. It takes 350 lbs. of force to pull these half-spheres apart after the air inside has been pumped out. Kit consists of two plastic hemispheres (each 6-1/2" in diameter) with O-ring se... More.

Nasco Speed of a Bubble Tube Set

An effective introduction to proper techniques of graphing and a powerful way to connect a physical science concept (velocity) with a mathematical idea (slope). Three transparent plastic tubes containing colored fluids of three different viscosities ill... More.

Pascal’s Ball

Easily demonstrate Pascal’s Law and show that water pressure transmits in all directions with this simple device. The device consists of a 3" hollow sphere with ten equidistant nozzles connected to a hand pump. Simply immerse the ball in water... More.

Dialysis Membrane Tubing – Flat Width 1", 100 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.

Equilibrium Tubes with Stand

This apparatus demonstrates that liquids will stand at the same level regardless of shapes of the tubes. Unit consists of four glass tubes of different shapes, mounted on sturdy base. A comprehensive teacher’s guide is provided. More.

Dialysis Membrane Tubing – Flat Width 1-3/4", 100 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.

Viscosity Tube

Demonstrate the mechanics of fluid by visually comparing the viscosity of four different liquids. Each tube contains a different weight liquid and a 3/8" plated steel ball. The balls are lifted just above the line on the tube with a magnet and then ... More.

Fire Syringe

Turn on to Ideal Gas Law with this explosive demonstration! As air compresses, the temperature increases and combustible material bursts into flames. Also is great for discussing adiabatic compression (rapid compression that raises air temperatur... More.

Nasco Buoyancy Experiment Kit

Will it float? Will it sink? Explore the factors that cause objects to float or sink. Students also experiment to investigate how shape and weight affect buoyancy. Kit contains: clear plastic box (5-1/8" x 5-3/8" x 1-3/8"), aquar... More.