Update: 29 September, 2023
Eclipse XDB-C8 and -C18 are microparticulate packings that use the technologies of eXtra-Dense Bonding (XDB) of organo-silane ligands and double endcapping to protect the ultra-pure (Type B) silica support from dissolution in mobile phases of intermediate pH. Eclipse XDB-C8 and -C18 are especially useful for the separation of acidic, basic, and other highly polar compounds by reversed-phase liquid chromatography. Eclipse XDB-C8 and -C18 are made by first chemically bonding a dense monolayer of dimethyloctyl (or octadecyl) silane stationary phase to a specially prepared, ultra-high purity ( 99.995% SiO2), ZORBAX Rx-SIL porous silica support. This special ZORBAX silica support (Type B) is designed to reduce or eliminate strong adsorption of basic and highly polar compounds. The bonded phase packing is then double endcapped using proprietary reagents and procedures to obtain maximum deactivation of the silica surface. Eclipse XDB-C8 and -C18 can be used in the pH range of 2–9, but is best suited for long-term operation at pH 3–8. The uniform, spherical Eclipse XDB-C8 and -C18 particles are based on ZORBAX Rx-SIL silica support that has a surface area of 180 m2/g and a controlled pore size of 80Å. Columns are packed to a stable uniform bed density using a proprietary, high-pressure, slurry-packing technique to give maximum column efficiency and longevity.
File format: PDF
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MD5 Checksum: 81CF26DE622EA24B42AFEE14255742AA
Publication date: 04 July, 2012
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PDF Link: Agilent Eclipse XDB Cartridge Columns Manual PDF