CSC Scientific Blog

A blog about test equipment

CSC Scientific Blog

Contact Angle Fundamentals: What You Actually Need to Know

Posted by Amanda Ranowsky on Aug 26, 2019 9:00:00 AM

It’s easy to pretend you know the operating terms surrounding contact angle measurement. But do you really? For industries such as coatings, printing, and oil recovery, contact angle testing is an essential component of the production and/or quality assurance process. Having a competent understanding of these terms will make it so much easier to choose the right instrument for your company - one you can be certain will do what you need it to do. 

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Topics: Surface Tension, contact angle, contact angle meter, dynamic contact angle, Liquid Properties

Surface Tension - Rings, Bubbles, Drops, and Plates

Posted by Art Gatenby on Feb 19, 2019 8:00:00 AM

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

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

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

Initiation to Contact Angle

Posted by Art Gatenby on Aug 11, 2016 4:24:42 PM

A classical definition of Contact Angle:

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Topics: Surface Tension, contact angle, contact angle meter, dynamic contact angle, Liquid Properties

Contact Angle and Surface Tension - A Fascinating Liaison

Posted by Amanda Ranowsky on Apr 4, 2016 12:56:10 PM

Contact angle and surface tension. The two terms are never far apart. Run a Google search of "contact angle" right now and see for yourself. You'll often see the terms mentioned within a breath of one another because contact angle and surface tension are two approaches to surface analysis - the study of how a surface interacts with other materials or components. Generally speaking, there is also a relationship between the two measurements, one that tends not to be very clearly explained in other resources. I hope to remedy that today.

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Topics: Automatic Surface Tension Measurment, Surface Tension Measurement, Surface Tension, contact angle, contact angle meter, wettability, 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

Dance Bars, Music Technology, and...Surface Tension?

Posted by Amanda Ranowsky on Jul 8, 2014 12:39:00 PM

What do an Irish music technology developer, a British manufacturer of arcade and retro-style furniture, and a dance bar in San Francisco have in common? Given a million guesses, I’d never have thought of this:

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Topics: Surface Tension Measurement, Surface Tension, Liquid Properties

How Are Consistency, Surface Tension and Viscosity Different?

Posted by Art Gatenby on Feb 26, 2014 11:35:00 AM

I used to think that liquids were pretty simple things. Is that what you think too?

Not so fast. Let’s take a look at three properties of liquids and see if we change our view.

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Topics: Newtonian Fluid, Viscometers, Viscosity, Bostwick Consistometer, Consistency, duNouy Rings, 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

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