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BEKOlut<sup>®</sup> PSA

Normal phases, Ion exchange phases

Medium polar sorbents


PSA (Primary Secondary Amine) is similar to aminopropyl ( NH2) SPE phases regarding the selectivity, but offers a much higher ion capacity due to the presence of the secondary amine group. Besides the behaviour as polar SPE phase, PSA acts as an weakly anion exchanger and therefore removes fatty acids and organic acids when performing multi-residue pestcide analysis in foodstuffs. It is used in all dispersive QuEChERS kits for sample clean-up.

Typical Application: Main application of PSA for dispersive SPE in QuEChERS kits

  • Base material: modified silica
  • Pore size: 60 Angstrom
  • Particle size: 40-63 µm
  • Functional Group: Ethylenediamine-N-propyl
  • Phase mechanism: polar and weakly basic anion exchange
  • Nitrogen content: > 2 %
  • Sample Matrix Compatibility: organic or aqueous solutions
Article Number
Sorbent weight Volume Unit / Pck. BEKOlut® PSA
100 mg1 mL100B01-PSA-A010
200 mg3 mL50B03-PSA-A020
500 mg3 mL50B03-PSA-A050
500 mg6 mL30B06-PSA-A050
1 g6 mL30B06-PSA-A100
2 g15 mL20B15-PSA-A200

Other formats available on request.