ETFE (Etyhltrifluoroethylene) tubing has some outstanding properties which makes it particularly suitable for HPLC since it has a higher burst pressure when compared to PTFE. It is important to note that when using ETFE with organic solvents it may swell and will reduce the max. pressure to 70 bar. It is the ideal polymer for applications with chloride salts, which typically corrode stainless steel.