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Xylem Analytics Blog

5 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

  • 3/3/2025
  • Dr. Andreas Eich

Frequently Asked Questions about Viscometry

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

  • 6/3/2024
  • Xylem Lab Solutions

Visco Handbook: Theory and Application of Viscometry (PDF)

The subject of this Visco Handbook is viscometry with glass capillary viscometers. Viscometry deals with the determination of viscosity and is a branch of rheology.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

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