Detection of endpoints in coulometric titrations:

Detection of endpoints along with indicators as within the case of volumetric titrations is quite satisfactory. For instance, detection of endpoints along with starch indicator in titration including iodine, detection of endpoints along with methyl orange indicator for titrations of hydrazine, thiocyanate or hydroxylamine against electrolytically generated bromine. Therefore coulometric end point could be more accurately determined through instrumental methods of detection of endpoints such as potentiometric, amperometric, conductometric or photometric methods.

Potentiometric endpoint detection has been searched to be appropriate in acidimetric and redox titrations. This technique of detection of endpoint has the benefits in which the titrations could be stopped exactly at the end point.  In addition, the observed emf (change in potential) does not depend on factors such as geometry of the cell, conditions of stirring, etc.  Therefore these techniques of detection of endpoints are more advantageous.