Grades 2-8.
Students make their own “conduction tester” and explore which substances are conductors and which are insulators. Includes two “D” cell battery holders, one light bulb and light bulb holder, four allig..

A very simple and easy unit to compare conductivity of different solutions, acids, or salts. Dip the probes, press the button, and note. The conductivity can be compared in six levels. The red LEDs give a quick visual comparison. Features 3¹&..

The 3.0V conductivity tester is designed to show the electrical properties of various liquids. This unit consists of a molded plastic lamp socket mounted on a base with two binding posts for connection of a wire cord. Comes complete with bulb, glass tum..

Lamp brightness is controlled by the conductivity of liquid in which the two electrodes are immersed. No exposed metal parts.

A very simple and easy unit to compare conductivity of different solutions, acids, or salts. Dip the brass probes, press the button, and note. The conductivity can be compared in 10 levels. Green LED gives a quick visual comparison. 5-1/2" L x 1..