CSC Scientific Blog

A blog about test equipment

CSC Scientific Blog

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: Wilhelmy Plates, duNouy Rings, Tensiometer, Surface Tension Measurement, Surface Tension, Fisher Tensiomat, Tensiomat Trade-In

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

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: duNouy Rings, Tensiometer, Surface Tension Measurement, Surface Tension, Interfacial Tensiometer, Fisher Tensiomat

How Does Surface Tension Relate to Viscosity?

Posted by Art Gatenby on Jan 17, 2011 9:58:00 PM

You may recall that I promised to offer my interpretation as to how Surface Tension is related to Viscosity.

To begin with, liquid surface tension and viscosity share a common trait: they both involve properties of fluids. After that, things start to get murky.

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Topics: Wilhelmy Plates, Viscosity, duNouy Rings, Tensiometer, Surface Tension Measurement, Surface Tension, Interfacial Tensiometer

Having Trouble Performing a duNouy Ring Test in Thick Samples?

Posted by Art Gatenby on Nov 15, 2010 3:29:00 PM

My musings were interrupted this week with a pressing challenge. It was stated like this:

 “My duNouy ring kept falling off the arm hook when attempting to immerse it into a high-viscosity sample.”

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Topics: duNouy Rings, Surface Tension Measurement, Surface Tension, Interfacial Tensiometer, tensiometers

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

Posted by Art Gatenby on Aug 19, 2010 5:16:00 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

Is My Test Equipment Lying?

Posted by Art Gatenby on Mar 9, 2010 4:45:00 PM

I keep running into this kind of thing.

There is a recurring question we are asked as instrument manufacturers:

"Is my equipment working OK?"

This is of particular concern when a production process seems to be off standard.

QC says: "Clearly Process Problems"

Production says: "Bad Test Results"

These challenges arise often.

What to do?

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Topics: Surface Tension

Surface Tension and Interfacial Tension

Posted by Art Gatenby on Nov 10, 2008 3:34:00 PM

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

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