> 3 min

How to measure contact angle hysteresis?

Contact angle hysteresis can be measured with optical (needle and tilting methods) and force (Wilhelmy method) tensiometers.

< 5 min

The Sauerbrey equation or Viscoelastic modeling? – how to assess which method to use

You have finished a set of successful QCM experiments, and it is time to analyze the data. Mass and thickness quantification are on the to-do list, and you must decide between the Sauerbrey equation and viscoelastic modeling. Here we present guidelines on how to evaluate which method to use.

~ 1 min

Are you prepared for the new transformer oil quality standard?

Interfacial tension of insulating liquids against water has been used for a long time as a criterion for aging evaluation. The latest revision for the ASTM D971 standard dates back to 2012. The new IEC standard is about the be released to improve the accuracy of the method.

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