This family of solid phase extraction (SPE) cartridges features 3M Empore extraction disks membranes. Empore membranes produce clean extracts and minimize particle fines. SPE yields clean, concentrated analyte solutions that allow improved signal-to-noise (S/N) ratios and lower limits. The cartridges are available in a selection of sorbents: C2, C8, and C18; Universal Resin; and Mixed Phase Cation resin. The cartridges feature low elution volumes, resulting in higher analyte concentrations and increased sensitivity. Empore solid-phase extraction membranes also eliminate channeling and reduce the risk of analyte loss that can occur with other packed particle bed SPE devices, while maintaining fast sample flow rates when processing biological fluids.Millipore800-645-5476www.millipore.com