Shim-pack Scepter columns consist of an organic silica hybrid particle for excellent stability and performance under a wide range of LC conditions. The pentafluorophenyl ligand provides alternate selectivity to a C8 or C18, and is recommended for the analysis of aromatic and positively charged (N-containing) compounds. The PFPP phase can be used in reversed-phase mode with 100% aqueous conditions, or HILIC mode for increased LCMS sensitivity. Max pressure: 100 MPa/1000 bar/15,000 psi, pH range: 1-8, 120A pore size, 15% carbon load, non-endcapped.