Raptor™ LC columns combine speed of SPP (superficially porous particles) with resolution of highly selective USLC® technology. Adept at separating compounds that are difficult to resolve or that elute early on C18 and other phenyl chemistries, Raptor Biphenyl is suited for fast separations in bioanalytical testing applications. To extend life of Raptor LC columns, guard column hardware has been mated with SPPs.