CSC Scientific Blog

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CSC Scientific Blog

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

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

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: Wilhelmy Plates, Automatic Surface Tension Measurment, duNouy Rings, Tensiometer, Surface Tension Measurement, Surface Tension, Interfacial Tensiometer, Fisher Tensiomat

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: Automatic Surface Tension Measurment, duNouy Rings, Tensiometer, Surface Tension Measurement, Surface Tension

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: duNouy Rings, Tensiometer, Surface Tension, 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: 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

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