Solid phase extraction is a chromatographic technique used to prepare samples for subsequent analysis by removing interfering substances that may be present. This is done either by retaining the substance of interest and washing off everything else or by retaining the interfering substances and eluting the product of interest.

Whatman SPE devices are designed to concentrate or isolate analytes from complex sample matrices. Available with a variety of packing media, these devices offer the advantage of working with different types of interactions between the sample components, sorbent, and suitable eluent. The polarity (polar, non-polar) or charge (anion, cation) of the analyte of interest will determine the proper choice of sorbent and solvent.

• Columns of 3, 6, and 12 ml sizes.
• Cartridges for use with a syringe.
• SPE discs for hydrophobic extraction from relatively large water samples.
• Sample drying devices for removal of water from samples in organic solvent.