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.Basics of Karl Fischer
As a quick review, the material to be tested is dissolved in a solvent. The water is released and converted by the reagent. This process happens inside an enclosed airtight titration cell.
As with many testing methods there are complications. Some substances are difficult to dissolve and require solvents that operate on the Karl Fischer reagent to cause side reactions that distort the water content calculation. Other materials only release the water at high temperatures. In these cases the simple process of dissolving the sample in the presence of the Karl Fischer reagent won't work.
The answer to side reaction problems or high temperature exigencies is an instrument known as a Karl Fischer Oven or Evaporator.
For more information on the Karl Fischer Moisture Method click here.
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