We supply sample loops made of PEEK and stainless steel for Vici valves from Vici Valco, Agilent Technologies and many more quality manufacturers. Samples can be placed on a chromatographic column using sample loops. Those can vary in capacities from a few micro-liters in analytical chromatography to many milliliters in preparative chromatography. One advantage of the PEEK material is its inertness to organic solvents and its biocompatibility. This results in a versatile usability. If any questions occur, don't hesitate to contact us.