Upchurch Scientific's PEEK (polyetheretherketone) polymer tubing is biocompatiible, chemically inert to most solvents, and can be used to replace stainless steel tubing in most liquid handking analytical systems. Unlike stainless steel and titanium tubing, PEEK tubing is flexible and can be easily cut to desired lengths. PEEK tubing can be used with stainless steel or polymer fittings. The benefits of PEEK polymer tubing include high pressure rating (up to 7,000 psi in many cases) and a high temperature rating (maximum continuous temperature of 100C). Additionally PEEK tubing has a very smooth internal surface, which causes less turbulance than similar sized metal stubing, contributing to improved resolution of sample bands.