Xylem Analytics Blog

27 postsFilter
  • 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

  • 8/30/2023
  • Stefan Kaus

Which 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

  • 5/12/2023
  • Dr. Patrick Wolf

7 Tips for accurate and reliable measurements with ISE sensors

What experience do you have with ISE sensors? Have you ever been faced with the question why the sensors drift, measure incorrectly or do not last long? With sensors of the brand WTW and proper maintenance and care, these issues are a thing of the past. In this article you will get helpful expert tips for a carefree measurement. more

  • 5/2/2023
  • Dr. Klaus Reithmayer

Accuracy of pH measurement

Many users ask themselves about the accuracy of pH measurement. There are many influencing variables that are often unknown or not known exactly, even to the expert. What are the main influencing variables, and how can the accuracy be determined?more

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