Use Thermo Scientific™ MAbPac™ Capillaries for top-down proteomics where sample volumes are strictly limited Reversed-phase HPLC columns provide high-sensitivity HPLC or LC/MS characterization of intact proteins. This versatile column can be used for peptide mapping where the capillary format balances sensitivity and throughput. Other applications are monoclonal antibodies (mAbs), fragments, variants, antibody drug conjugates (ADCs), pegylated proteins, and bispecific proteins. These columns provide excellent resolution, long life, and low carryover.