Description General description For high-performance, low-pressure liquid chromatography (HPLPLC). Column-end geometries allow sample to be introduced at the inlet as a narrow band and exit without causing extra band broadening or peak distortion. Conical design of three larger columns reduces flow pathlength differences and avoids dead volume that can form with square-end fittings. For use with PTFE couplings, injection port, and end-fitting adapters without O-rings. Intended for operation at elevated pressures and should always be used with the specified plastic safety shields listed. Columns are epoxy-coated to prevent chipping and breakage. Use filter-paper disc to retain packing. Column I.D. is measured at largest diameter; effective length is distance between threads. Made of borosilicate glass. Order column fittings and adapters separately.