The Origin of the Soxhlet Extractor

  • Jensen W
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Abstract

German agricultural chemist Franz Ritter von Soxhlet first introduced its Soxhlet laboratory extractor in 1879 which deals in the determination of milk fat. It is said to be that in every invention, that are uncertainties and this the ambiguity with its use of constant level siphon to return the extract to the solvent flask after the completion of a given extraction cycle. As old as the recorded history, the practice of solid-liquid extraction has already been done that is being used in the preparation of teas and perfumes. Several other terms were used to describe this process in the mid-19th century that includes maceration, infusion, decoction, lixiviation and displacement. This development of his innovation was motivated with on how to quantify the extraction process with the intent of using it to quantitatively determine the fat content of organic matter. 27 different types of extractors were introduced during the late 19th and early 20th centuries where seven or almost a fourth of it were variations of Soxhlet's original design and was named after him.

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Authors

  • William B. Jensen

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