Solid phase extraction, as we called it as SPE, is widely used for the pretreatment when the sample is analyzed. With SPE used for separation, the solution will be generally left behind by gravity or with a vacuum device to speed up the separation, and many of the problems associated with liquid/liquid extraction can be avoided, such as incomplete phase separations, less-than-quantitative recoveries.
The scientists in the lab also can save lots of expensive, breakable specialty glassware, and they don’t need to dispose of large quantities of organic solvents.
SPE is an advance way to prepare liquid samples and extract semivolatile or nonvolatile analytes. The scientists often use it with solids that are pre-extracted into solvents as well. Compared with the liquid/liquid extraction, SPE is more efficient and easy to perform.
Available in a wide variety of chemistry, adsorbents, and sizes, Hawach SPE cartridges are excellent tools for sample extracting, concentrating and cleanup. With the consist of a medical PP empty tube, a medical PE sieve plate, and a fixed adsorbent, you can find Hawach SPE Cartridges in different types of silica gel, polymer, adsorption, and the special cartridge according to matrix type.
SPE is a physical extraction process consisting of a liquid phase and a solid phase. During the extraction process, the adsorption of the solid relative analyte is greater than that of the sample base.
When the sample passes through the solid phase cartridge, the analyte is adsorbed on the surface of the solid filler, and the other sample components pass through the cartridge analyte and can be eluted with a suitable solvent to achieve separation and purification.
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