Automatic Titrations:

Now-a-days large number of automatic titrators based on the principle of potentiometry has come into the market. Those are hugely meaningful in those places, where a large number of routine analyses are required. These may not be more accurate than the manual techniques, but are quite rapid and decrease the time needed to perform the experiment and thus offer some economic advantages. Two different automatic titrators are available:

1. The first type gives titration curves of V vs E or ΔE/ Δ V  vs V. The end point is obtained from the curve by inspection.

2. In the second type of titrators, a titration is stopped automatically while the potential of the electrode system reaches a predetermined value and the volume of reagent delivered is read at the operator's convenience or printed on a tape. These titrators usually employ a burette system with a solenoid-operated value to control the flow or alternately it makes use of a syringe, the plunger of which is activated by a motor driven micrometer screw.