Solid, reliable Roc HPLC columns are pressure rated for any 400 bar HPLC system and deliver the peak shape, reproducibility, ruggedness, and performance you demand for all of your conventional HPLC applications, especially USP and other compendial methods. An exceptional value for routine analyses and large-volume workflows, Roc columns are made from high-purity, fully porous silica backed by quality manufacturing and are available in a variety of phases. Just 5 phases cover 98% of USP methods. Newly designed minimal packaging offers compact storage with serial #-specific certificates of analysis available upon request.