Our 1µL internal groove PEEK and alumina ceramic sample loop fits EV700-100, EV750-100, RV700-100, RV750-100, PR700-100, PR750-100 valves. PEEK polymer and alumina ceramic are inert to most organic solvents and are considered biocompatible. This stator face assembly with an internal 1µL groove for sample loading replaces the standard stator face assembly and the external sample loop.