Fused Silica Tubing
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HPLC Columns
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Nacalai Tesque (COSMOSIL, COSMOSCORE, COSMOGEL)
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COSMOCORE Series (Core-Shell)
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COSMOCORE PBr (Pentabromobenzyl Group with Dispersion Force Interaction)
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COSMOCORE 2.6PBr 90Å - 2.6µm
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Core-shell particles consist of a nonporous core inside a porous shell. By using these core-shell particles, one can achieve sharper peaks compared to fully porous silica gel particles of the same diameter. Compared to fully porous particles, core-shell particles have a more uniform particle diameter therefore, core-shell particles can be packed in the column more uniformly to minimize sample diffusion.
COSMOSIL PBr column is packed with pentabromobenzyl-bonded silica that enables separation by dispersion force interaction. COSMOSIL PBr retains hydrophilic compounds stronger than C18 columns under the same reversed-phase conditions. COSMOCORE 2.6PBr can separate compounds with similar hydrophobicity, utilizing several kinds of molecular interactions, including dispersion force generated by the bromine atoms.