Disposable Pipette Extraction (DPX) is a fast and efficient SPE technique used for a wide range of applications such as drugs of abuse and therapeutic drug monitoring. Only 200-250 μL of sample is needed to reach the required limits of detection using a fully automated process. The extraction step is performed in 30-60 seconds, the complete process including elution, etc., in 3-6 minutes depending on the application. Additionally, automated DPX is performed during the GC or LC run of the preceding sample ensuring maximum throughput and best possible system utilization. Elution requires only a small amount of solvent, which means that DPX effectively provides a concentration step. For many applications, such as pesticides in fruit and vegetables, solvent evaporation is not required.
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Michelle LongoAsst. Managing Editor
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