P-017

Jay Wadhawan

j.wadhawan@hull.ac.uk

Neel Sisodia, Kay L. McGuinness and Nathan S. Lawrence

The University of Hull, United Kingdom

In situ recalibration of ion selective electrodes

Reference electrode drift resulting from the exchange of ions at the solution/reference electrode chamber interface is the number one reason why ion selective electrodes and pH sensors in particular require recalibration, costing companies up to 70% of the total lifetime cost of a pH probe. In this work, a novel and innovative methodology is proposed in which the reference potential is tracked, allowing for in situ recalibration of the sensor without the need for end-user intervention.