CSC Scientific Blog

A blog about test equipment

CSC Scientific Blog

How Long Does a Water Activity Test Take?

Posted by Amanda Ranowsky on Jul 27, 2017 8:00:00 AM

The answer to the question, “How Long Does a Water Activity Test Take?” is, as with most testing questions, “it depends.” Some water activity meters promise a test completed in a very short time; some in as little as five minutes. This time is an arbitrary selection that may or may not produce a satisfactory result.

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Topics: Bound Moisture, Free Moisture, Moisture Analysis, Water Activity, Moisture, water activity measurement

LOD is Really Simple, or Moisture Analysis for the Newbie

Posted by Art Gatenby on Jun 12, 2015 4:51:00 PM

One quiet night, long ago I was musing over moisture analysis and how easy it is to do using Loss-on Drying (LOD). Little did I know what was in store.

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Topics: Bound Moisture, Moisture Analysis, Moisture Testing, Loss-On-Drying

What is Moisture Content?

Posted by Art Gatenby on May 29, 2012 3:24:00 PM

Last week, as I was reflecting on a recent moisture content problem, I recalled our series “Loss-on Drying and Other Moisture Mysteries.” In that series I examined moisture chemistry in products. However, I did little to define moisture content.

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Topics: Bound Moisture, Free Moisture, Moisture Analysis, Water Activity, Moisture Testing, Karl Fischer, Karl Fischer Titration, Moisture

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

Posted by Art Gatenby on Mar 31, 2011 3:39:00 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 these 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

Loss-On-Drying Moisture Analysis and Other Moisture Mysteries Part III: Free and Bound Water

Posted by Art Gatenby on Jan 25, 2011 4:18:00 PM

In my previous missive about Loss-On drying, we discussed Vapor Pressure -- because logically it was next. As we continue to explore moisture, we learn how vital vapor pressure is when regarding the quirky issues of free and bound water.

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Topics: Evaporation, Bound Moisture, Free Moisture, Moisture Analysis, Moisture Testing, Loss-On-Drying, Moisture

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