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Sample Preparation

Solid phase extraction, or SPE, is perhaps the most powerful sample preparation technique in common use today. Amongst SPE's strengths are selectivity, flexibility and high automation potential. SPE involves the use of chromatographic sorbent in a column format. A sample is passed through the column bed, analytes retain on the sorbent while the sample matrix liquid passes through, then the sorbent bed is washed to remove undesired interferences and the purified analytes subsequently eluted from the column.