Titrators are available to perform a titration using the lead ISE. With this titration a lead electrode can be used as an indicator to follow the progress and detect the endpoint of a chelometric titration of lead with disodium EDTA. During the titration the sensor follows the decreasing lead concentration as small additions of disodium EDTA titrant are added. The EDTA reacts with the lead forming a complex. At the stoichiometric end point, a large change in mV occurs. Titration systems are available with one or two analog board inputs and options for one or two dosing pumps.