Exploratorium
Exploratorium: Science Snacks: Conductivity Meter
Create a conductivity meter with everyday materials in this activity. This conductivity meter is portable and allows students to test the conductivity of liquids easily.
TeachEngineering
Teach Engineering: What's the Conductivity of Gatorade?
Students use conductivity meters to measure various salt and water solutions, as indicated by the number of LEDs (light emitting diodes) that illuminate on the meter. Students create calibration curves using known amounts of table salt...
TeachEngineering
Teach Engineering: Should I Drink That?
Students perform the first steps that environmental engineers do to determine water quality - sampling and analysis. Student teams measure the electrical conductivity of four water samples using teacher-made LED conductivity testers and...