COSMOSIL alkyl-chained columns use packing materials like TMS (Trimethyl) with alkyl chains shorter than C18 (ODS). As the length of alkyl chain becomes shorter, the hydrophobic interaction becomes weaker. Owing to the near-perfect endcapping treatment and very low level of free silanol, COSMOSIL ZMS-MS can be used widely for the general analysis of compounds including those for which C18 (ODS) columns produce long retention times.
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monomeric bonding type TMS (Trimethyl)
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Carbon Content approx. 5%
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near-perfect treatment endcapping
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Pore Size 120Å
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Surface Area 300m2/g
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