I was musing, the other day on the designs of two ring tensiometers. One of them is called an interfacial tensiometer

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Topics: Surface Tension Measurement, Surface Tension, interfacial tension, interfacial surface tension, surface Tension Testing, du Nouy Ring Method, du Nouy tensiometer, Liquid Properties

 

Liquid surface tension has a straightforward definition with a dramatic job description: it’s the force that politely stops a liquid from flinging itself off into the universe.

Measuring it, however, is far less straightforward. There are multiple ways to quantify surface tension, and they can quickly turn an easy concept into a small maze of methods. To bring some order to the chaos, this article focuses on two main measurement approaches: drop-based techniques and force-based techniques.

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Topics: Automatic Digital Tensiometer, Automatic Surface Tension Measurment, Surface Tension Measurement, Surface Tension, Interfacial Tensiometer, interfacial tension, tensiometers, du Nouy tensiometer, surface tension instruments, surface tension analysis

As followers of these rants know, we manufacture and distribute tensiometers. As a tensiometer manufacturer, we are often asked, “if I am going to replace my tensiometer, which one should I get?”

Let's explore the alternatives and compare their respective capabilities.

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Topics: Wilhelmy Plates, Automatic Digital Tensiometer, duNouy Rings, Tensiometer, Surface Tension Measurement, Surface Tension, Fisher Tensiomat, Tensiomat Trade-In, Liquid Properties, Digital tensiometer, automatic Tensiometer

I was musing, the other day on the designs of two ring tensiometers. One of them is called an interfacial tensiometer

Read More

Topics: Surface Tension Measurement, Surface Tension, interfacial tension, interfacial surface tension, surface Tension Testing, du Nouy Ring Method, du Nouy tensiometer, Liquid Properties

The Bostwick Consistometer

We make the Bostwick Consistometer. The Bostwick is used extensively to measure the consistency of sauces and condiments. It has strong application in the quality control departments of ketchup and mustard producers. Results from a Bostwick Consistometer have been used for more than six decades to control the quality of many of the foods you use.

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Topics: Viscosity, Consistency, Surface Tension Measurement, Liquid Properties

I was musing, the other day on the designs of two ring tensiometers. One of them is called an interfacial tensiometer and the other simply a tensiometer. The plain tensiometer works only with an upward pull and the interfacial works with both an upward pull as well as a downward push. Before I get to my question a couple of definition might be useful.

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Topics: Surface Tension Measurement, Surface Tension, interfacial tension, interfacial surface tension, surface Tension Testing, du Nouy Ring Method, du Nouy tensiometer, Liquid Properties

The definition of Liquid Surface Tension is simple.  

It's the force that keeps a liquid from flying off into space.

However, the measurement of surface tension can take many forms, which can be confusing. In an attempt to get some clarity, we have articulated two principle measurement concepts in this article: drop-based measurement and force-based measurement.

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Topics: Automatic Digital Tensiometer, Automatic Surface Tension Measurment, Surface Tension Measurement, Surface Tension, Interfacial Tensiometer, interfacial tension, tensiometers, du Nouy tensiometer, surface tension instruments, surface tension analysis

Yes, you can walk on water: with Surface Tension.

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Topics: Surface Tension Measurement, tensiometers, surface tension instruments, surface tension analysis, walk on water

This is an update of an article originally published in December 2013 - Three years ago.

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Topics: Automatic Digital Tensiometer, Automatic Surface Tension Measurment, Surface Tension Measurement, Surface Tension, du Nouy tensiometer, Liquid Properties, surface tension instruments, surface tension analysis, Digital tensiometer, automatic Tensiometer

An understandable definition of surface tension: “The attraction force between molecules at the surface of a liquid. The force that keeps if from flying off into space”.

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Topics: Tensiometer, Surface Tension Measurement, Surface Tension, actual surface tension, apparent surface tension, Liquid Properties