/services/b/tips/posts/tip-85-use-linear-reagent-demand-control-for-systems-with-difficult-to-control-phControl operators would say to me, “Can you do something to slow down the pH changes?” For a setpoint on a steep titration curve, the pH would often zip right past the setpoint on its way from one tail of the curve to the other tail. Titration curve plotsen-USTelligent Community 13