Automated, Accurate pH and Conductivity Measurements Using a Discrete Photometric Analyzer with an ECM Module

Abstract

Conclusion Introduction In this study pH and electrical conductivity (EC) were measured from water samples using an Electro Chemical Measurement (ECM) unit integrated into an automated discrete photometric analyzer. Integrated ECM unit is capable of simultaneously measure both pH and conductivity alongside the photometric testing. Accuracy of the results was verified by parallel testing with manual conductivity and pH meters. Conductivity test has been developed to cover a measurement range from 20 μS/cm to 112 mS/cm. The pH test measures a pH range from 2 to 12. Results show very good precision, below 1.0 %, and good correlation to the manual methods with an R2 value ranging from 0.977 to 1.000.

Cite this paper

@inproceedings{Kiviluoma2016AutomatedAP, title={Automated, Accurate pH and Conductivity Measurements Using a Discrete Photometric Analyzer with an ECM Module}, author={Mari Kiviluoma and Sari Hartikainen}, year={2016} }