The All-about-pH Blog
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High Temperature pH
We have a new pH meter with separate pH and temperature probes. It seems to have problems measuring pH of very hot (200 F +) tomato products. We used to
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Questions on measuring pH
Do you have a question about measuring pH? Then submit your question here . . .
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The Nernst Equation
Nernst equation for a pH electrode is important to understand for you as a user of pH equipment.
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History of the pH Meter
The first commercial pH testers were built around 1936 by Arnold Beckman in the United States and by Radiometer in Denmark. However, glass pH electrodes
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Color produced by acids and bases on pH paper
Can anyone tell me what is the color produced by lemon juice and dil. ethanoic/acetic acid on a pH paper in accordance to the pH color chart?
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Air stripper application
I am looking for an industrial grade submersible pH sensor to use in an air stripper application. Some considerations are the reliability of the submersible
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Soil slurries
I would appreciate very much if anyone could give me some advice. I am looking for a pH meter (not very expensive) with double junction electrodes (silver/silver
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The pH measurement forum
The pH measurement forum provides opportunities for the informal exchange of opinions, experiences and comments on different aspects of pH testing and measurement.
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Nonglass pH electrode
In many pH applications, the fragile glass electrode needs to be replaced by a nonglass pH electrode alternative.
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All about pH
The objective of this site is to explain everything you need to know about pH measurement.
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pH Electrode
To pick the appropriate pH electrode for your application you need to have a basic understanding of the different parts of an electrode.
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The pH scale
The pH values of different aqueous solutions can be arranged in a pH scale.
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The pH combination electrode
The most common pH electrode is the combination electrode, which contains both the reference and the measuring electrode in one housing.
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pH Meter
How a pH meter works . . .
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pH color chart
A common method to measure the pH level is to use a pH indicator and the related pH color chart.
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Online pH measurement
To use online pH measurement systems you need to take into considerations a couple of things . . . .
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Intelligent sensors
Intelligent sensors are sensors that are equipped with diagnostic capabilities to monitor their performance and function.
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Differential pH sensors
Differential pH sensors may provide a solution if all else fails. Learn why....
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Ground loop problems
If you are struggling with unstable pH values for your process measurement, there may be ground loop problems.
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pH Measurement loop
When a pH measurement loop is producing unstable, erratic, or maybe no response, it's necessary to find the reason. . .
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