NUCLEODUR is a fully synthetical type B silica (silica of 3rd generation) offering highly advanced physical properties: Totally spherical particle shape Outstanding surface microstructure High pressure stability Low metal content NUCLEODUR as a state-of-the-art silica is the ideal base material for modern HPLC phases. It is the result of MACHEREY-NAGEL's pioneering research in chromatography for almost 50 years. NUCLEODUR Sphinx RP Bifunctional RP phase, balanced ratio of propylphenyl and C18 ligands, endcapped, USP L1 / L11 Key features: Distinct selectivity based on well-balanced bifunctional surface coverage Widens the scope for method development based on additional π-π interactions Suitable for LC/MS due to low bleeding characteristics Technical characteristics: Octadecyl and propylphenyl modified silica Pore size 110 Å Particle sizes 1.8 μm, 3 μm and 5 μm pH stability 1-;10 Carbon content 15 % Recommended application: Quinolone antibiotics, sulfonamides, xanthines, substituted aromatics