CSC Scientific Blog

A blog about test equipment

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

Posted by Hank Levi on Feb 24, 2024 2:17:08 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

Mixing It Up Inside A Karl Fischer

Posted by Hank Levi on Jan 31, 2024 3:56:30 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: Coulometric Karl Fischer, Karl Fischer, Karl Fischer Titration

Karl Fischer vs. Loss-On Drying - Which Method is the Best?

Posted by Amanda Ranowsky on Oct 17, 2023 8:10:18 PM

Karl Fischer Titration and Loss-on Drying (LOD) are both methods for determining moisture content in a product.

That’s where the similarities end, though. In this article, I will explain the difference between Karl Fischer Titration and Loss-on Drying, and offer some suggestions to help you choose the right method for your application.

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Topics: Moisture Analysis, Moisture Testing, Karl Fischer, Karl Fischer Titration, Loss-On-Drying

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

The Simple Truth About Karl Fischer Moisture

Posted by Art Gatenby on Jul 9, 2020 3:05:35 PM

 

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Topics: Coulometric Karl Fischer, Moisture Analysis, Moisture Testing, Karl Fischer Oven, Karl Fischer, Karl Fischer Titration, Loss-On-Drying, Moisture, interfacial tension, moisture content, moisture measurement

What is Moisture Content?

Posted by Art Gatenby on Nov 4, 2019 3:00:00 AM

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

Don’t Worry - Karl Fischer is Easy

Posted by Art Gatenby on Nov 16, 2015 5:25:25 PM

When we first started measuring moisture with Karl Fischer, I was instructed in the complex chemical reactions involved. I was also was told that the process was skittish.

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

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

Do I Need A Karl Fischer Oven?

Posted by Art Gatenby on Jan 23, 2013 6:20:00 PM

As you know the Karl Fischer Method of moisture analysis has a reputation of being water specific. The method works through the use of a special Karl Fischer Reagent.

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

Why Do I Get Inconsistent Moisture Test Results?

Posted by Art Gatenby on Oct 14, 2011 2:32:00 PM

Why are my Moisture Test results inconsistent?” 

That is an issue for many of you who test for moisture. We discussed the complexities and multiplicity of issues involved with moisture content determination in our “Loss-on Drying Moisture Analysis and other Moisture Mysteries” series.

In addition to intrinsic properties of test samples that may adversely affect moisture testing systems, automatic equipment parameter set-up, operator oversights and sample handling contribute to seemingly intractable moisture test result inaccuracies.

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Topics: Moisture Analysis, Moisture Testing, Karl Fischer, Loss-On-Drying, Moisture

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