Next Article in Journal
Two-Phase Framework for Indoor Positioning Systems Using Visible Light
Next Article in Special Issue
Electrochemical Properties of Nitrate-Selective Electrodes: The Dependence of Resistance on the Solution Concentration
Previous Article in Journal
Transilient Response to Acetone Gas Using the Interlocking p+n Field-Effect Transistor Circuit
Previous Article in Special Issue
High Sensitive pH Sensor Based on AlInN/GaN Heterostructure Transistor
Article Menu
Issue 6 (June) cover image

Export Article

Open AccessTechnical Note
Sensors 2018, 18(6), 1915;

Measurement Uncertainty Calculations for pH Value Obtained by an Ion-Selective Electrode

Institute of Automatic Control, Silesian University of Technology, ul. Akademicka 16, 44-100 Gliwice, Poland
Author to whom correspondence should be addressed.
Received: 4 May 2018 / Revised: 23 May 2018 / Accepted: 8 June 2018 / Published: 12 June 2018
(This article belongs to the Special Issue Potentiometric Chemical Sensors)
Full-Text   |   PDF [741 KB, uploaded 15 June 2018]   |  


An assessment of measurement uncertainty is a task, which has to be the final step of every chemical assay. Apart from a commonly applied typical assessment method, Monte Carlo (MC) simulations may be used. The simulations are frequently performed by a computer program, which has to be written, and therefore some programming skills are required. It is also possible to use a commonly known spreadsheet and perform such simulations without writing any code. Commercial programs dedicated for the purpose are also available. In order to show the advantages and disadvantages of the ways of uncertainty evaluation, i.e., the typical method, the MC method implemented in a program and in a spreadsheet, and commercial programs, a case of pH measurement after two-point calibration is considered in this article. The ways differ in the required mathematical transformations, degrees of software usage, the time spent for the uncertainty calculations, and cost of software. Since analysts may have different mathematical and coding skills and practice, it is impossible to point out the best way of uncertainty assessment—all of them are just as good and give comparable assessments. View Full-Text
Keywords: uncertainty evaluation; Monte Carlo simulation; potentiometry; pH measurement uncertainty evaluation; Monte Carlo simulation; potentiometry; pH measurement

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Wiora, J.; Wiora, A. Measurement Uncertainty Calculations for pH Value Obtained by an Ion-Selective Electrode. Sensors 2018, 18, 1915.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top