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
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 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
The most popular was to measure include:
- Drying the material and measure the weight loss
- Using a calibration and electronic instrument
- Using a titration method such as Karl Fischer
When using these processes, we take for granted that the results will be the product's actual moisture.
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Topics: Evaporation, Moisture Oven Test, Infrared Moisture, Moisture Analysis, Moisture Testing, Karl Fischer Titration, Loss-On-Drying, evaporator oven
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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
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, Karl Fischer Titration, Praxis Moisture Balance, Loss-On-Drying, Moisture, karl fischer moisture, water content measurement
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
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
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
When People are first introduced to the Karl Fischer Moisture Determination Method, eyes glaze over and we can perceive a mental “Why did I ask?”
If you have any history with moisture analysis, you will have found, that for some applications, the Karl Fischer Titration Method is the best and sometimes the only way to get an accurate moisture measurement.
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Topics: Moisture Analysis, Karl Fischer, Karl Fischer Titration, karl fischer moisture, karl fischer moisture determination, karl fischer questions
