CSC Scientific Blog

A blog about test equipment

CSC Scientific Blog

Jim, the Secret Agent, and the Machine That Changed Everything

Posted by Amanda Ranowsky on Oct 29, 2013 12:03:00 PM

Chapter One:

 

Jim’s life was dull. So, so dull. He spent his days surrounded by piles of sieves – his glamorous job was to calculate the ratio of particles left in the sieves of each stack after a sample of his company’s product was run through the stack using a sieve shaker. It was a job much like the one his cousin Hiram had, although he seemed to remember hearing that Hiram had found an easier way to do it.  

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Topics: Particle Size Analysis, Sieve Testing, Sieve Analysis

How Do I Set Up A Bostwick Consistometer?

Posted by Art Gatenby on Oct 23, 2013 8:30:00 AM

 

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?

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

What is The Function of a Sieve Shaker?

Posted by Art Gatenby on Oct 17, 2013 4:56:00 PM

 

Visitors to our web pages often arrive with the question, “What is the Function of a Sieve Shaker?

The simple answer is “to expose the particles in a sample to all the openings in each sieve in a stack”. A sieve stack is the result of fitting each sieve to be used in a given particle size analysis into the one above. The sieve with the largest mesh holes is at the top with each subsequent sieve of a tighter mesh size than the one above it.

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Topics: Sieve Shakers, "Ask Art", Sonic Sifter, Agglomeration, Particle Size Analysis, Sieve Testing, Sieves, Sieving Process, Sieve Analysis

What Can I Use To Get The Moisture Content In My Product?

Posted by Art Gatenby on Oct 3, 2013 5:36:00 PM

A question we get a lot is:

“How do I determine the moisture in my product?

Of course, the answer is often “it depends”, and the method does depend on the chemical and physical composition of the product. There are several methods used to determine moisture content: Loss-on-Drying (also known as Weight Loss), Karl Fischer, NIR, and Radio Frequency. 

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Topics: "Ask Art", Moisture Analysis, Karl Fischer, CSC Digital Moisture Balance, Loss-On-Drying, Moisture

Can You Define Viscosity Without Feeling Thick?

Posted by Art Gatenby on Sep 30, 2013 4:43:00 PM

Do an internet search for the term “viscosity”, and you’ll find a variety of definitions for the word. For example:

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Topics: Viscometers, Viscosity

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 Digital Tensiometer, Automatic Surface Tension Measurment, duNouy Rings, Tensiometer, Surface Tension Measurement, Surface Tension, Interfacial Tensiometer, Fisher Tensiomat, Liquid Properties, Digital tensiometer

Twice as Nice: Introducing a New Employee and a New Moisture Balance

Posted by Amanda Ranowsky on Jul 18, 2013 3:15:00 PM

Hello! My name is Amanda Ranowsky, and I’ve just been hired at CSC Scientific. I’ve come fresh from completing my Master of Arts degree abroad, studying Publishing at Oxford Brookes University in the United Kingdom. I also have a BA in English from Christopher Newport University.

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Topics: Moisture Analysis, Praxis Moisture Balance, Loss-On-Drying

Moisture Content and Water Activity - What Are They?

Posted by Art Gatenby on May 30, 2013 1:23:00 PM

Many accessing our web site ask questions such as:

  • “How does water content affect water activity?”

  • "How is water activity different from water content?”

  • ”Can I convert from moisture to water activity?”

I previously commented on water activity and now hope to clarify the differences between water activity and moisture content. Given that both of these measurements deal with water connected to a material, we must first understand of water content in a product.

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Topics: Moisture Sorption Isotherm, Moisture Analysis, Water Activity, moisture content, moisture measurement, water activity measurement, water content measurement

Accurate QC with Sieve Testing - Hiram’s Story Chapter I

Posted by Art Gatenby on Apr 9, 2013 4:26:00 PM

Hiram is a Quality Control Supervisor of a plant manufacturing specialty pellets. This is about his struggle with particle-size sieve testing and results analysis.

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Topics: Sieve Testing, Sieves, Sieving Process

Accurate QC with Sieve Testing - Hiram’s Story Chapter II

Posted by Art Gatenby on Apr 9, 2013 4:24:00 PM

We are back with Hiram, the QC Supervisor in a specialty pellet plant. We pick up the story after the QC department was hit hard by the flu season.

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Topics: Particle Size Analysis, Sieve Testing, Sieves, Sieving Process, Sieve Analysis

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