Dr. Urs Hartfelder offers insights on how to reduce or prevent pH measurement errors.

To watch this webinar, please contact Mettler Toledo at info@mt.com.

Instruments measuring pH offer fast and simple operation, but accuracy, reliability, and repeatability of results are subject to various sources of error like contamination, asymmetric measurement cell, membrane resistance, or ambient temperature.

pH measurements are often considered to be easy, fast and simple. However, when the sources of potential errors are understood in more detail, results can often be improved which can lead to increased accuracy, repeatability and reliability.

In this webinar presented by Dr. Urs Hartfelder, METTLER TOLEDO Product Manager, discussed how to increase the accuracy, repeatability, and reliability of your pH results by knowing the sources of commonly made pH measurement errors.

Key Topics Include:

  • Overall model to understand different influencing factors
  • Details of quantifiable and unquantifiable errors
  • Theoretical information about the cause of the errors
  • Method to improve your measurement accuracy for respective errors
  • Approach to prioritize improvements


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Product Manager

Dr. Urs Hartfelder studied chemistry at ETH Zurich, focusing mainly on analytical chemistry and spectroscopy. He graduated in 2016 with a PhD in chemical engineering and has worked in the laboratory equipment business since then. In 2019 he joined METTLER TOLEDO in his current role as Global Product Manager for laboratory pH meters, and is a subject matter expert on pH measurements, pH meter development and standards thereof.

Production Partner


METTLER TOLEDO is a global manufacturer and marketer of precision instruments for use in laboratory, industrial and food retailing applications. The Company has strong worldwide leadership positions. A significant majority of our instrument sales are in segments in which we are the global leader. In addition to a broad product offering, we have one of the largest global sales and service organizations among precision instrument companies. We focus on the high value-added segments of our markets by providing innovative instruments that often integrate various technologies including application-specific solutions for customers. We design our instruments not only to gather valuable data but also to facilitate the processing and transfer of this data into customers'​ management information systems.

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