Knowledge Base
Here you will find a compilation of frequently asked technical questions.
If you would like more information about our products and their features, you can contact us using our contact form.
We are at your disposal for any request.
Questions and answers
To ensure our customers can easily get started with fluid analysis, we have developed a support page. There you will find descriptions of the parameters and questions from other customers. You can also ask questions about this yourself. At the moment this support page is only available in English – we are currently working on a German version.
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Calibrate a pH meter
No pH meter can provide reliable readings without calibration. Learn how to calibrate your device properly, which buffer solutions you need, and how often you should calibrate it.
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Measure pH value
Measuring pH Made Easy: Test Strips vs. pH Meters, the Right Procedure in 5 Steps, and the Most Common Mistakes When Taking Measurements.
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What is the pH value?
The pH level indicates whether a liquid is acidic, neutral, or alkaline. Learn what it means, how it is measured, and why it is so important.
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What is called a “double junction” ?
Anyone who works with pH electrodes will sooner or later come across the term “double junction.” But what does it mean, and when does using such an electrode actually make sense? In this article, you will learn how a double-junction electrode is constructed, how it differs from a standard electrode, and for which applications it…
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What is the oxidation-reduction potential (ORP)?
Oxidation-reduction potential (ORP) or redox is a measurement that indicates how oxidizing or reducing a liquid is. For example, water can be moderately oxidizing (like carbonated water), highly oxidizing (like chlorinated water or hydrogen peroxide solution), or reducing (like an environment where anaerobic microbes are active). In short, ORP is a measure of the cleanliness…
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How do I measure dissolved oxygen (DO)?
There are several methods by which dissolved oxygen (DO) in water can be measured. First, there are wet chemical techniques in which a water sample is collected and then subjected to a chemical reaction used to determine oxygen content. Second, conventional membrane DO sensors are available in which a probe operating on electrochemical principles is…
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What is dissolved oxygen (DO)?
Dissolved oxygen (DO) is oxygen gas (O2) dissolved in water. Gases in the atmosphere such as oxygen, nitrogen and carbon dioxide naturally dissolve in water to some degree. Like salt or sugar, these gases are invisible in water once they have dissolved.
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How do I measure the conductivity ?
With a suitable instrument, electrical conductivity (EC) measurements are relatively quick and easy. EC measures the ability of water to conduct electricity, which in turn depends on the ion concentrations in the solution. For this reason, EC provides useful information about the solution and can be used to estimate total dissolved solids (TDS).
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How do I measure the ORP value?
The oxidation-reduction potential (ORP) is measured by inserting an ORP sensor into water. This can be either a Pocket Tester or a meter with a separate electrode. The meter then reads the electrical potential (voltage) from the sensor and may make a correction or offset before reporting the value. The specified values, which can be…
