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What is the difference between volumetric and coulometric Karl Fischer Titration?

April 26, 2017coulometric difference karl fischer titration volumetric

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What is the difference between volumetric and coulometric Karl Fischer Titration?

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The titrant can either be added directly to the sample by a burette (volumetry) or generated electrochemically in the titration cell (coulometry). The coulometric titration is mainly employed for the water determination according to Karl Fischer when the content is very low, e.g. smaller than 50-100 ppm (0.005-0.01%).