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CSC Scientific Blog

Surface Tension by duNouy Rings or Wilhelmy Plates – Which to Choose?

Posted by Art Gatenby on Jul 16, 2018 5:34:18 PM

When tempted to think I know all there is about surface tension measurement, further information brings me back to earth. I’m conversant with the principal applications: surfactant analysis, plating, detecting contaminants, development of ink and the like. I have assisted customers to set up and calibrate duNouy Ring tensiometers for most applications -- all the while taking for granted that the Ring technique was the method of choice -- with only infrequent questions arising about Wilhelmy Plate tensiometers.

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Topics: Surface Tension, duNouy Rings, Wilhelmy Plates, Tensiometer, Liquid Properties, automatic Tensiometer, Digital tensiometer, interfacial surface tension, surface tension instruments, surface tension analysis

Should You Move to "Actual" Surface Tension?

Posted by Art Gatenby on Sep 8, 2016 4:31:38 PM

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

Viscosity, Consistency and Surface Tension - What Are These Things?

Posted by Art Gatenby on Aug 27, 2014 12:56:00 PM

Nearly every day we have a question about differences between Viscosity, Consistency and Surface Tension. There is usually a second part of the question; 

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Topics: Viscometers, Viscosity, Bostwick Consistometer, Tensiometer, Surface Tension Measurement, Surface Tension, Liquid Properties

When Do I Need An Automatic Digital Tensiometer?

Posted by Art Gatenby on Dec 16, 2013 7:55:00 AM

 

Automatic digital tensiometers are expensive - three to four times more so than a high-precision manual tensiometer. We hope to clearly depict when an automatic digital tensiometer is not merely nice to have, but essential.

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Topics: Wilhelmy Plates, Automatic Digital Tensiometer, Automatic Surface Tension Measurment, "Ask Art", duNouy Rings, Tensiometer, Surface Tension Measurement, Surface Tension, Liquid Properties

What are the Primary Conditions Affecting Surface Tension?

Posted by Art Gatenby on Sep 23, 2013 12:42:00 PM

One of the ways to describe surface tension in fluids is: the property of a liquid’s surface that resists force. It serves as a barrier to foreign materials and holds the liquid together. This ever-present property is caused by unbalanced forces on surface molecules that pull toward the main part of the liquid.

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Topics: Surface Tension Measurement, Surface Tension, duNouy Rings, Wilhelmy Plates, Tensiometer, Interfacial Tensiometer, Automatic Surface Tension Measurment, Fisher Tensiomat, Liquid Properties, Automatic Digital Tensiometer, Digital tensiometer

Surface Tension Measurement -- How High Is High Enough?

Posted by Art Gatenby on Mar 29, 2013 5:12:00 PM

I am regularly startled by little things that trigger new understanding about our slice of the instrument World.  This time it is about surface tension.

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Topics: Surface Tension Measurement, Surface Tension, duNouy Rings, Tensiometer, Automatic Surface Tension Measurment, Liquid Properties

Is Calibrating a CSC Tensiometer Hard?

Posted by Art Gatenby on Mar 29, 2012 3:55:00 PM

We get repeated queries about calibration of our DuNouy Ring Tensiometers. That makes me think that calibrating procedures to insure accurate surface tension measurment needs some clarification.

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Topics: Surface Tension, duNouy Rings, Tensiometer, Calibration

Which Type of Tensiometer do I Need?

Posted by Art Gatenby on Dec 22, 2011 6:55:00 PM

As followers of these rants know, Fisher Scientific stopped offering its Tensiomat Tensiometer about a year ago. As a tensiometer manufacturer, we at CSC Scientific were very interestedin this and have tried to let the world know that we might be able to help with things such as replacement rings, trade-ins and the like.
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Topics: Surface Tension Measurement, Surface Tension, duNouy Rings, Wilhelmy Plates, Tensiometer, Fisher Tensiomat, Tensiomat Trade-In, Liquid Properties, Digital tensiometer, Automatic Digital Tensiometer, automatic Tensiometer

Why Calibrate a CSC DuNouy Tensiometer?

Posted by Art Gatenby on Sep 13, 2011 11:14:00 AM

Within the catalog of questions we are asked is a  category related to Calibrating duNouy Ring Tensiometers. The subject matter ranges from how, why and what is proven?

I guess the immediate and wise-assed answers are:

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Topics: Surface Tension Measurement, Surface Tension, duNouy Rings, Tensiometer, Interfacial Tensiometer, Calibration, Fisher Tensiomat, Liquid Properties

Surface Tension – Tensiometer Update

Posted by Art Gatenby on Apr 29, 2011 2:11:00 PM

This ramble is about changes in the Surface Tension Equipment landscape.

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Topics: Surface Tension Measurement, Surface Tension, duNouy Rings, Tensiometer, Interfacial Tensiometer, Fisher Tensiomat, Liquid Properties

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