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Are all C18 reversed phase columns similar?

KNAUER offers four different C18 modifications of Eurospher II materials. They differ in polarity (carbon content) as well as in the applied endcapping, what results in different separation characteristics.

  • Eurospher II C18 A: 10% carbon content, ∼50% hydrophilic endcapping
  • Eurospher II C18: 16% carbon content, ∼50% endcapping
  • Eurospher II C18 H: 17% carbon content, ›99% endcapping
  • Eurospher II C18 P: 20% carbon content, ∼99% endcapping

 

Please see the selectivity plots for the phases based on the Tanaka test.

 

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