The Oasis® family of sample extraction products is designed to simplify and improve your sample preparation by combining the right sorbent chemistry, device format and methodology. Achieve robust, selective, and sensitive solid-phase extraction [SPE] methods without worrying about low recoveries caused by breakthrough, sorbent drying, pH limitations, and undesirable silanol activity.

Oasis® SPE sorbents—covered by eight U.S. patents—are unique in their purity, reproducibility, stability, and retention characteristics. Today, they are the most widely used polymeric SPE products in bioanalytical laboratories. 

Oasis® HLB, the first hydrophobic, yet water-wettable, polymeric SPE sorbent, was introduced in 1996, and is designed for fast, generic, reversed-phase SPE. A year later, advanced, novel, 2-D methodologies were introduced, using Oasis® HLB to achieve cleaner, more selective extracts. In 1999, two mixed-mode strong ion-exchange chemistries—Oasis® MCX and MAX—were introduced, enabling highly selective and sensitive generic protocols for basic and acidic compounds, respectively.

The Oasis® WCX and WAX mixed-mode weak ion exchangers we introduced in 2004, allowing extraction of strongly basic and strongly acidic compounds, respectively. In 2005, the Oasis® 2x4 Method was launched - a simplified strategy for method development that provides a straightforward approach to the selection of the SPE sorbent and protocol.

The Oasis® family also includes 96-well plates, on-line Oasis® SPE columns, and the patented Oasis® µElution plate that, for the first time, enables SPE elution volumes as low as 25 µL.