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What is the Difference Between Dynamic and Kinematic Viscosity?

Posted by Amanda Ranowsky on Jan 15, 2015 6:31:24 PM

I’m always trying to find a simple vision of the material testing world. When I was assigned to our new Viscosity product line, I thought I’d found it. Then I was introduced to the concepts of the dynamic and kinematic factors of viscosity.

This is my attempt to bring clarity to these two principal ways to measure viscosity. 

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Topics: Viscometers, Viscosity, Consistency, Kinematic Viscosity, Dynamic Viscosity

What's So Special About Picking A Sieve Shaker?

Posted by Art Gatenby on Jan 6, 2015 9:15:00 PM

If you take Sieve Shakers for granted, you may be surprised to know that the selection of the right shaker can have a profound effect on your sieving results.

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Topics: Sieve Shakers, Particle Size Analysis, Sieve Analysis

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

When is a Sieve Not a Sieve?

Posted by Amanda Ranowsky on Jul 17, 2014 5:00:00 AM

In our business, we use the word “sieve” to describe a piece of equipment that separates desired elements from unwanted material using a woven wire screen or mesh net. To others, “sieve” can mean something very different.

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Topics: ASTM, Particle Size Analysis, Sieve Calibration, Sieve Certification, Sieves, Sieving Process

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

How I Learned That Black Liquor Was Not Dark Rum

Posted by Art Gatenby on Jun 26, 2014 4:31:00 PM

When our customers tell me about the different places where CENCO and CSC Digital Moisture balances are used it always interests me.

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Topics: Moisture Analysis, Moisture Testing, Moisture

How Wide Is The Moisture Measurement World?

Posted by Art Gatenby on May 13, 2014 6:26:00 PM

At one end of the spectrum is the classic Speedy Moisture Tester where you use the reaction of water with calcium carbide to cause a mini explosion resulting in a moisture measurement reading. This method is used frequently for soils, concrete, and other like materials.

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Topics: Moisture Sorption Isotherm, Moisture Analysis, Water Activity, Karl Fischer, Loss-On-Drying

How To Fix An Abused Bostwick Consistometer

Posted by Art Gatenby on Apr 2, 2014 2:49:00 PM


Which looks more durable to you?

The value of a Bostwick Consistometer is that it’s easy to use, which makes it simple to do repeatable testing. The Consistometer is made of stainless steel. One would think that this means a long and useful life. However, as I regularly discover, the real world often defies theory.

A Consistometer’s value is diminished if its leveling plate and screws get bent out of alignment. The story that follows tells how people in the real world handle, or mishandle, this instrument, and what can be done to save it.  

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Topics: Abuse Protection Option (Consistometer), Bostwick Consistometer, Consistency

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

Viscosity Basics: For Those of Us Who Aren't Scientists

Posted by Amanda Ranowsky on Feb 4, 2014 9:00:00 AM

Since I joined CSC Scientific in July 2013, I’ve been on a steep learning curve. You see, I’ve never been much of a science person. There was even one particular chemistry class in high school used to give me migraine headaches - routinely. 

Having no real background in the sciences means that I’ve had a lot to learn since I joined a company that sells scientific testing equipment. Maybe you’re nodding in sympathy with me right now. Many of our clients – that is, the people doing the purchasing on behalf of their company – are not scientists and don’t have a thorough knowledge of the scientific principles behind the products they’re told to buy.

 

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Topics: Newtonian Fluid, "The Basics", Viscometers, Viscosity

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