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The determination of pH is one of the most common process chemical measurements made today. This booklet explains the principles behind the measurement and discusses ways of avoiding common pitfalls. The booklet also discusses industrial ORP (oxidation-reduction potential) measurements.
The Theory of pH Measurement. pH measurement has a wide variety of industrial applications in virtually every industry. These range from water conditioning to specific process related measurements to waste treatment. WHAT IS pH? pH is a measure of the acidity or alkalinity of a water solution.
10 pH Theory Guide METTLER TOLEDO pH Theory Guide The quantitative difference between acidic and alkaline substances can be determined by performing pH value measurements. A few examples of pH values of everyday substances and chemicals are given in Figure 4 below. Figure 4 pH values for some chemicals and everyday products.
To be able to measure pH one needs to have a measurement tool which is sensitive to the hydrogen ions that define the pH value. The principle of the measurement is that one takes a sensor with a glass membrane which is sensitive to hydrogen ions and observes the reaction between it and a sample solution.
What is a pH measuring system? How can you obtain an accurate pH measurement? How can you maintain a reliable signal? How do you select the correct pH electrode? How do you maintain pH electrodes? How do you clean pH electrodes? And more… Download the pH Theory Guide.
This guide reviews some important concepts to have a good understanding of pH measurement. Furthermore, it covers all the important factors that influence the measurement including possible sources of errors.
23 Μαρ 2023 · This article reviews the principles and theory behind pH measurements and relates them to what is obtainable in the field and laboratory.
