SPE is a method of sample preparation that concentrates and purifies analytes from solution by sorption onto a sorbent contained in either a disposable solid phase cartridge or a 96-well plate, followed by elution of the analyte with a solvent and reconstitution into a mobile phase that is appropriate for the instrumental method used for analysis.
Starlab SPE Cartridges
are made of medical grade PP and forming in one time. Frits are made of UHMW-PE. There is a variety of models to choose. Starlab provides SPE OEM service in order to support you to establish your own SPE brands easily.
According to principle of reaction, SPE is divided into the following three categories.
1. Normal-phase extraction- Adsorbents used in normal phase extraction are polar.
2. Reversed-phase extraction- The sorbent and the target analytes by reversed-phase extraction is usually the non-polar or weak polar, relying mainly on non polar and non polar interactions, is a fan of Edward force or dispersion force.
3. Lon exchange extraction- is relying on the interaction between target analytes and sorbent.