Solvent extraction is one of the most used analytical techniques to separate compounds by using solvents and exploiting components’ solubility differences.
There are several methods of performing an extraction. The traditional Soxhlet method is the best known though it has multiple areas for improvement.
A small amount of dry sample is placed in a thimble, which is positioned in a distillation flask containing the proper solvent. Once reached an overflow level, the solution of the thimble-holder is aspirated by a siphon, which unloads the solution back into the distillation flask. This solution carries the extracted into the bulk liquid. The solute remains behind in the distillation flask, and the solvent passes back to the samples. The process is repeated until complete extraction takes place (Saim et al., 1997).
Modern analytical laboratories are striving to develop methods that accomplish the desired results in a more rapid, less expensive, and automated manner.
Hot solvent extraction and the VELP SER 158, are the answer to these needs!
The SER 158 automatic solvent extractor works totally unattended and, as the table below shows, enables you to: