•  VertiPak™ PSA (Primary, Secondary Amine) SPE is dual
    purpose sorbent that can act both as a weak anion exchanger
    and polar phase.
•  As a weak anion exchanger, PSA has 2 amine groups that
    offer higher ionic capacity than NH2. PSA also is a very
    good bidentage ligand, excellent for chealation with a
    number of metal ions. As a polar sorbent, the PSA sorbent
    can hydrogen bond with any molecule containing an -OH,
    -NH or –SH functional group when conditioned with a
    non-polar solvent such as hexane.
•  Typical applications include multiresidue pesticides, PAH.
•  Tube format is available in 7 tube sizes.
•  Cartridge format is available in 300mg and 600mg size.
•  Tubes or cartridges are packaged in zip sealing bag
    protective from moisture and light.
•  Includes a Performance report including the QC results,
    lot chromatogram and lot recovery test.