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Xylem Analytics Blog

34 postsFilter
  • 3/19/2025
  • Dr. Andreas Eich

Life span of the calibration of glass capillary viscometers

This article is about glass capillary viscometers. These are used to measure the viscosity of Newtonian fluids. Important standards in this context are ASTM D445, the new DIN 53000 and ISO 3104.more

  • 4/2/2025
  • Dr. Klaus Reithmayer

FAQ pH measurement

In this blogarticle we answer to possible questions, that may occur to you during installation and operation of our instruments. We also respected common questions.more

  • 2/24/2025
  • Dr. Lisa Wild, Nicolas Kaltwasser

Comparing Chlorine Measurement Methods: Colorimetric DPD Analyzer vs. Amperometric Electrode

Measuring chlorine levels in water is essential for various applications such as swimming pools, industrial processes and drinking water treatment. Two primary methods used are DPD colorimetric and amperometric electrode. Both methods offer accurate results but differ fundamentally in their approach to chlorine determination. This blog post explores the differences between these two methods and discusses their strengths and limitations.more

  • 2/3/2025
  • Dr. Lisa Wild

Amperometric Chlorine Measurement in Drinking Water – Commissioning and Maintenance Made Easy

Find out here how to commission the WTW chlorine sensor correctly, how to ensure measurement accuracy with the right maintenance intervals and how to minimize maintenance work at the same time.more

  • 1/27/2025
  • Dr. Andreas Eich

Ubbelohde viscometer: Precision in viscosity measurement

Ubbelohde viscometers are available in different versions, which are described in ISO 3105. Xylem manufactures SI Analytics® brand viscometers according to DIN 53000-1 and ASTM D445, including micro Ubbelohde viscometers for small sample volumes and special designs such as TC viscometers for automatic thermoelectric detection. These viscometers are named after Leo Ubbelohde, who applied for a patent for this type of viscometer in 1932. more

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