Research in Chemical Education

Research in Chemical Education

Testing an Inexpensive Conductivity Meter

A 9-volt battery powered conductivity meter (Gregory Berenato and David F. Maynard, J. Chem. Educ., 1997, vol. 74, p. 415) produces a higher frequency when conductance is greater. It has been modified to use less power and to produce frequency within the range of human hearing. The purpose of the research is to determine if the frequency produced by the meter is a reproducible function of conductivity and, if so, the relationship between frequency and conductivity. An experiment using the meter will be written and tested for a 100-level chemistry course. A further goal of this project is producing inexpensive instrumentation for less affluent institutions