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2450-ECHEM Electrochemical Test Suite
Chemists use electrical measurement techniques to study chemical reactions and dynamics. Cyclic
voltammetry (CV), a type of potential sweep method, is the most commonly used measurement
technique in electrochemistry. A CV measurement sweeps an electrode's voltage as a function of time
and measures the current that flows through the solution. The resulting I-V data provides important
electrochemical properties about the solution (or analyte: a substance whose chemical ingredients
are being identified and measured) under investigation. CV is used not only in the field of electro-
chemistry but in inorganic chemistry, organic chemistry, and biochemistry.
Cyclic voltammetry measurements are typically performed using a common instrument called a poten-
tiostat. Potentiostats are electronic instruments designed to control the voltage difference between
two electrodes. They often lack front panel displays and control knobs, have limited current and volt-
age source output capacity, and typically have a high list price.