Multitasking valves act like a switch and control the flow path of the chromatography system The KNAUER portfolio covers valves for analytical and preparative chromatographic applications. Due to flexibility in material, valves can be used for standard HPLC and purification tasks as well as for FPLC and dosing applications with different eluents, and even at high temperature.For over 30 years, KNAUER has been a reliable OEM supplier of valves, pumps, detectors and further HPLC components. KNAUER is an ISO 9001 certified company with strict production and process stability for high quality: Made in Germany.