"Tubes"

The selective permeability of membranes is of fundamental importance to cellular physiology. Students will perform experimental procedures involving diffusion, dialysis, water potential and osmotic potential. For 10 lab groups.

The high-frequency coil can be used to test vacuum equipment for leakage or excite electrical tubes for demonstrations.

Fine hand instrument for qualitative visible spectrum analysis.

This bell jar demonstrates that sound waves can't travel and therefore can't be heard without air or matter.

Reveal hidden biological evidence.

Investigate Trace Evidence of Enzymes in Saliva Samples

Explore a full range of motion with the advanced hydraulic arm

100 feet of extra tubing for TeacherGeek projects.

The Student Coin and Feather Tube shows the two items in a vacuum, falling at the same rate.

This demo features a cathode beam to explain the electromagnetic nature of electrons.

The Centripetal Force Kit is inexpensive and effective.

This vacuum plate and pad are the perfect tools for vacuum experiments.

This newly designed rheostat features a protective cover.

Students Investigate Alternative Energy Forms

Ideal for demonstrating that vapor pressure increases when temperature increases.

Effective Method of Showing Normally Invisible Currents