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The Chemical Educator
ISSN: 1430-4171 (electronic version)
Abstract Volume 30
(2025) pp 29-33
A Low Cost Auto-titrator for Undergraduate Chemistry Laboratory Programs
John C. O’C. Young
Department of Chemistry, Saint Mary’s University, Halifax, Nova Scotia, Canada B3H 3C3, john.young@smu.ca
Received January 13, 2025. Accepted February 25, 2025.
Published: 3 March 2025
Abstract. A burette and a simple optical titrant drop counter are shown to fulfill the monitored titrant solution dispensing function of a costly mechanical auto-titrator. A conductometric, potentiometric or photometric sensor to monitor the changing concentration of an analyte solution constituent and the titration operating program complete the experimental setup. A conductometric acid – base titration based on an application of this burette based auto-titrator is described. Advantages of conductometric titration equivalence point detection over the potentiometric alternative are noted and referenced.
Key Words: Laboratories and Demonstrations; analytic chemistry
(*) Corresponding author. (E-mail: john.young@smu.ca)
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