CSC Scientific Blog

A blog about test equipment

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

How Wide Is The Moisture Measurement World?

Posted by Art Gatenby on Nov 11, 2021 5:16:48 PM

At one end of the spectrum of the moisture world 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

Moisture Content and Water Activity - What Are They?

Posted by Art Gatenby on Nov 11, 2021 5:04:31 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

Loss-On-Drying Moisture Analysis and Other Moisture Mysteries Part IV: Water Activity

Posted by Art Gatenby on Nov 11, 2021 3:27:32 PM

Loss-On-Drying moisture analysis seemed like a simple process until, in a state of naïve bliss, I promised to look at evaporation, vapor pressure and bound water. While I was otherwise occupied with hese realities, I offered to enter the world of witchcraft and folklore; water activity.

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

Can You Define Viscosity Without Feeling Thick?

Posted by Art Gatenby on Oct 5, 2021 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

Why Test for Viscosity in Food

Posted by Art Gatenby on Sep 30, 2021 4:35:00 PM

When people hear of viscosity for the first time, invariably they ask these three questions:

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Topics: Newtonian Fluid, Measure Viscosity, Viscometers, Viscosity, Viscosity in Food

How I Learned That Black Liquor Was Not Dark Rum

Posted by Art Gatenby on Sep 28, 2021 12:28:35 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, Loss-On-Drying, Moisture, moisture content, water content measurement

Coulometric/ Volumetric Karl Fischer Titration -- Which Should I Use?

Posted by Art Gatenby on Sep 23, 2021 12:53:41 PM

As usual when we pose a question, like:

Should you use Coulometric or Volumetric Karl Fischer to measure moisture in your product?

We often get a the reaction, “So Who Cares?” We'll try to answer both questions.

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Topics: Coulometric Karl Fischer, Volumetric Karl Fischer, Moisture Analysis, Moisture Testing, Karl Fischer, Karl Fischer Titration

Water Activity Measurement and the Illusion of Quick and Accurate

Posted by Art Gatenby on Aug 17, 2021 2:00:38 PM

Water Activity

Water activity is the water in a material available to support the growth of microorganisms.  Consequently, the measurement of water activity is important in areas such as food processing, pharmaceutical production, products affected by mold, and a host of products that change characteristics when exposed to moisture.

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Topics: Water Activity, stop mold, chilled mirror, aw

Mixing It Up Inside A Karl Fischer

Posted by Art Gatenby on Jul 7, 2021 5:46:23 PM

 When people are looking for a way to measure small amounts of moisture, we often recommend the Karl Fischer method.

What is Karl Fischer?

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Topics: Karl Fischer, Karl Fischer Titration

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