3M Empore Solid Phase Extraction Membranes

Solid Phase Extraction (SPE) is a widely used technique for the isolation and concentration of analytes from liquid samples to achieve increased sensitivity in the analytical process. Empore solid phase extraction membranes offer an innovative solution to environmental and bioanalytical sample preparation problems.

The fundamental basis of the Empore technology is the ability to create a particle-loaded membrane, or disk, using any sorbent particle. The particles are tightly held together within an inert matrix of polytetrafluoroethylene (90% sorbent: 10% PTFE, by weight). The PTFE fibrils do not interfere with the activity of the particles in any way. The Empore membrane fabrication process results in a denser, more uniform extraction medium than can be achieved in a traditional Solid Phase Extraction (SPE) column or cartridge prepared with the same size particles. The thin bed mass of the disk allows to minimise the solvent and sample volumes, decrease the elution volumes and to process the samples at maximal flow rates without channeling.

The 3M Empore membranes are available in different formats :

• SPE Cartridges
• 96-well Extraction Plates
• 47mm or 90mm Extraction Disks