Whats the Conductivity of Gatorade?
Summary: Using a conductivity meter constructed from the Basic stamp microcontroller, Parallax Board of Education and typical circuit elements, students measure the conductivity of various salt and water solutions. The conductivity of the salt solution is indicted by the number of LEDs (light emitting diodes) that are illuminated on the meter. Students will construct a calibration curve using known amounts of table salt dissolved in water, and their corresponding conductivity readings. This calibration curve will then be used to estimate the total equivalent amount of salt contained in Gatorade (or an unknown salt solution).
