Amperometric refers to a method of measuring electric current in a solution, often used in electrochemistry. This technique involves the detection of current flow that occurs when a specific chemical reaction takes place at an electrode. The amount of current produced is directly related to the concentration of the analyte, making it useful for quantitative analysis. In amperometric sensors, such as those used in glucose meters, a constant voltage is applied to an electrode, allowing for the measurement of current changes. This method is widely employed in various fields, including environmental monitoring and medical diagnostics, due to its sensitivity and accuracy.