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7/12/2024
Dr. Klaus Reithmayer

Calibration of an oxygen sensor

Here you can find out from our expert why and how electrochemical and optical oxygen sensors need to be calibrated.more

6/28/2024
Stefan Kaus

Which kind of pH electrode do I need for my acid-base titration application?

In an ideal world, there would be only one pH electrode for all their acid-base titrations. In this ideal world, it would not matter whether the solution to be titrated was aqueous or non-aqueous, had a high or low conductivity and whether only a few ml were to be titrated in a small vessel or 250 ml in a 400 ml beaker. One electrode would fit all of these applications.more

10/2/2023
Dr. Andreas Eich

Use of Ubbelohde Master viscometers as a national standard in metrological institutes

National metrological institutes are responsible for the dissemination of the units of physical quantities. Known are especially the quantities mass, length and time: e.g. there are four atomic clocks in operation in Germany, at the Physikalisch-Technische Bundesanstalt in Brunswick (PTB), which provides the time standard for legal time in Germany. more

8/31/2023
Stefan Kaus

Which electrodes can still be used for titration?

In addition to pH titration, there are a number of other types of titration, such as redox, precipitation and complexometric titration, as well as titrations with polarizable electrodes ("Dead-Stop titrations").more

4/16/2023
Dr. Klaus Reithmayer

What is the pH value?

The pH value is one of the most important and most frequently measured quantities in analytical chemistry. A pH measuring instrument is always needed when the pH reading must be determined accurately. An appropriate pH meter is available in virtually every laboratory.more