CSC Scientific Blog

A blog about test equipment

Who Beats Up Your Bostwick?

Posted by Art Gatenby on Dec 7, 2021 4:59:05 PM

Definition of a Tough Consistency Instrument

Sometimes we encounter a product that is so simple and rugged that it would be tempting to deem it indestructible. Consider a stainless steel trough with a gate and etched numbers on the bottom. Seems simple and the stainless would make it tough, right? That is not the case, but it has survived nearly unchanged for more than 85 years.

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Topics: Bostwick Consistometer, Consistency, consistometer, Liquid Properties

When Do I Need a Consistometer vs. a Viscometer?

Posted by Art Gatenby on Nov 30, 2021 4:05:31 PM

One of the most frequently asked questions we get is, "How can I get a viscosity reading from the Bostwick Consistometer?" The answer is, "You can't." We've elaborated on this in other articles. We've even got a great infographic to explain the difference. With this article, I hope to advance the understanding of the difference between these concepts even further.

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Topics: Viscosity, Bostwick Consistometer, Consistency, viscometer, consistometer, Liquid Properties

Why Not A Bostwick Consistometer Calibration Standard?

Posted by Art Gatenby on Nov 24, 2021 4:00:00 PM

Customers Want Bostwick Consistometer Calibrations.

When told that CSC Scientific does not calibrate Bostwick Consistometers, people ask .Then how can I calibrate my consistometer and where can I get a calibration standard?”.

Sampling Method Using Your Product

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Topics: Bostwick Consistometer, Consistency, Calibration, Liquid Properties

Is Consistency Viscosity? Not really!

Posted by Art Gatenby on Nov 19, 2021 5:18:35 PM

The Bostwick Consistometer

We make the Bostwick Consistometer. The Bostwick is used extensively to measure the consistency of sauces and condiments. It has strong application in the quality control departments of ketchup and mustard producers. Results from a Bostwick Consistometer have been used for more than six decades to control the quality of many of the foods you use.

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Topics: Viscosity, Consistency, Surface Tension Measurement, Liquid Properties

Bostwick Consistometer – Incline or Not

Posted by Art Gatenby on Nov 16, 2021 3:38:46 PM

The Bostwick Consistometer is used all over the World to check the quality of sauces and condiments. In our in-house training session we do blind product tests and clearly define the differences between brand of ketchup and mustard. This is a testament to the value placed on Bostwick Consistometer tests by the top food manufacturers.

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Topics: Bostwick Consistometer, Liquid Properties

Liquid Surface Tension and Interfacial Tension Between Liquids

Posted by Art Gatenby on Jun 24, 2021 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, Liquid Properties

What is the Difference Between Dynamic and Kinematic Viscosity?

Posted by Art Gatenby on Oct 19, 2020 3:30:00 AM

At first glance, viscosity seems like a fairly simple concept. It helps describe how thick a product is, or how well it flows. That's all, right?

In reality, there are several different terms that come under the heading of viscosity. These terms are derived from how the viscosity is measured. When people talk about viscosity, they are talking about one of two things: kinematic viscosity or dynamic viscosity.

It's not easy to find a lot of information on the differences between dynamic and kinematic viscosity. This is my attempt to bring clarity to these two principal concepts.

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Topics: Newtonian Fluid, Viscometers, Viscosity, Consistency, Kinematic Viscosity, Dynamic Viscosity, rotational viscometer, Liquid Properties, density, Texture Analysis, gel time

How Do I Set Up A Bostwick Consistometer?

Posted by Art Gatenby on Dec 20, 2019 2:45:00 PM

 

We get the same two questions almost every week about the CSC Bostwick Consistometer:

             1) What angle do I use to set it up?

             2) How do I level the Consistometer?

Principle of Operation

The principle of the CSC Bostwick Consistometer is based on the slump cone. In this procedure, a cone is filled with the material to be tested. It is then set on a level surface with the open area facing downward. The cone is pulled away and after a fixed time, the amount that the material slumped is measured.  The thicker the material, the less slumping occurs.

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Topics: "Ask Art", Bostwick Consistometer, Consistency, Liquid Properties, Bostwick, consistency vs viscosity

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 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

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