XBP (L) C18 has an identical bonded phase as XBP C18. However, XBP (L) C18 has relatively low surface area which allows compounds to have shorter retention times. These columns are an excellent alternative to Hypersil BDS-C18, Hypersil BDS-C8; Zorbax XDB-C18, Zorbax XDB-C8 which comparatively could have too much retention. XBP (L) C18 have relatively larger pore size (150Å) and are suitable for the separation of large molecules.