I'm trying to conduct a Volumetric Karl Fischer Titration. To determine the end-point of the reaction, I use the amperometric method. As far as I know, the endpoint is the time when a sudden change (up to 10-20 microamperes) in the current occurs that remains stable for 1 minute.

This is the graph of current vs. time. I couldn't obtain both conditions to determine the endpoint simultaneously.

Does anyone know how I can discriminate the endpoint of the reaction?