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.