Patent ID: 7842174

Claim:
An integrated electrochemical chip comprising: a microprocessor configured to allow a user to select from among a plurality of available electrochemical techniques for use by the integrated electrochemical chip to measure an ion concentration in a solution; a function generator controlled by the microprocessor to selectively generate a waveform based on the user-selected electrochemical technique; and a potentiostat configured to generate and measure a current in the solution through a plurality of electrodes according to the user-selected electrochemical technique, wherein the potentiostat comprises: a control amplifier configured to provide a current through a first electrode and a second electrode so as to maintain a predetermined voltage between the second electrode and a third electrode; and a current amplifier configured to measure the current provided through the first electrode and the second electrode, wherein the current amplifier is configured to measure the current throughout an entire range comprising approximately 100 pA to approximately 2 mA.