Bond Elut C8 is a good alternative when analytes are too strongly retained on C18 phases.

• Excellent for strongly retained analytes
• Polar interactions are not significant
• Less retentive than C18

Bond Elut C8 is very similar in property to C18, but is not as retentive for nonpolar compounds due to its shorter hydrocarbon chain and therefore reduced carbon loading. C8 is an excellent replacement for C18 when analytes are too strongly retained for effective elution. The potential for polar interactions is higher than for C18 because there is less coverage of the silica surface.