For reproducible reversed phase separation: LiChrospher® RP-phases are reliable and versatile traditionally produced spherical silica carrier with reversed phase properties. They are well suited for the chromatography of acidic, neutral and weakly basic compounds, substances found frequently in all analytical fields. A selectivity and performance guarantee makes sure that these parameters remain constant form batch to batch and from year to year. Different modifications are available: RP-8 endcapped, RP-8, RP-18 endcapped, RP-18 and RP-select B. The difference in polarities are clearly described by the selectivity pattern. This can save time and avoid errors when working on new methods.