•  VertiPak™ HLP-SA SPE is mixed-mode, highly cross-linked
    Vinylpyrazine-Divinylbenzene Copolymer-
    Trimethylaminopropyl,(VPZ-DVBT) polymeric sorbent offering
    both strong reversed phase interaction and strong anion-
    exchange interaction with interference-free extraction, 
    compatability with LC-MS or GC-MS.
•  Needs no condition solvent, aqueous sample can be loaded
    directly to the dry sorbent bed.
•  Exhibits very high binding capacity over mixed-mode silica-
    C8/SAX sorbent, up to 30% of sorbent weight allowing
    larger sample loads or a smaller sorbent bed resulting in
    high, reproducible recoveries and less solvent usage.
•  Exhibits excellent mass transfer and mechanical strength
    for acidic polar compounds in an aqueous sample or a
    bioloical fluid sample.
•  Typical applications include acidic drugs and metabolites
    from biological fluids, environmetal pollutants from water,
    drugs of abuse and metabolites from urine e.g. salicylic
    acid, ibuprofen, acetaminophen, 11-nor-delta-9-
    tetrahydrocannabinol-9-carboxylic acid.
•  Tube format is available in 4 tube sizes.
•  Tubes 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.