A low powered auto-titrator using pH endpoint detection

Abstract

Titration is a method used in laboratories to determine the concentration of a titrate. The auto-titrator is a commercial apparatus that carries out the titration operation automatically and provides the equivalence point data. The Automated titrator follows a defined sequence of operations which are repeated several times until the endpoint of the titration reaction is reached (titration cycle). Commercially available auto-titrators are typically expensive and cost approximately Rs.60,000 and above. A miniaturised micro-volume autotitrator with potentiometric end-point detection is proposed. The method is based on on-line potentiometric titration of the acids with various bases. The main purpose of the project is to develop a low powered system with sufficient accuracy for educational applications at a cost of about one-fifth of the commercially available systems.