Since RePeat is a polymer based solid phase extraction cartridge (SPE) it can be used between pH 2-13. This property will give possibilities of extracting ionized analytes in their uncharged form. The uncharged analyte has higher affinity to the hydrophobic inner surface of the RePeat particle, giving an improved recovery.

The RePeat solid phase extraction cartridge (SPE) is extremely simple to use in method development. This is due to the fact that general methods can be used for extraction of acids and amines:

• Extraction of acids
• Extraction of amines

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Please contact ChromTech if you have any questions or if you need more information about the above applications.

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