It allows for unmonitored and unmanaged operation soxhlet extraction apparatus pdf efficiently recycling a small amount of solvent to dissolve a larger amount of material. The source material containing the compound to be extracted is placed inside the thimble.
The thimble is loaded into the main chamber of the Soxhlet extractor. The flask is placed on the heating element. The Soxhlet extractor is placed atop the flask. The condenser ensures that any solvent vapour cools, and drips back down into the chamber housing the solid material. The chamber containing the solid material slowly fills with warm solvent.
The thimble ensures that the rapid motion of the solvent does not transport any solid material to the still pot. This cycle may be allowed to repeat many times, over hours or days. After many cycles the desired compound is concentrated in the distillation flask. The advantage of this system is that instead of many portions of warm solvent being passed through the sample, just one batch of solvent is recycled. The non-soluble portion of the extracted solid remains in the thimble, and is usually discarded. The sample is placed in the thimble.
The siphoning part of a Soxhlet extraction. A Soxhlet apparatus has been proposed as an effective technique for washing mass standards. The apparatus we propose for the solvent pre-wash is the Soxhlet apparatus, which has been used very successfully before for washing stainless-steel standard-mass surfaces. This apparatus has its main application in chemistry for dissolving weakly soluble species from solid matrices. This page was last edited on 16 September 2017, at 22:33.
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