Black PTFE, available in two IDs, is recommended for light sensitive applications such as enzymatic reactions, luminescent reactions, connecting to a flow cell, and radioactive HPLC.PTFE (polytetrafluoroethylene) tubing is chemically inert and suitable for lower pressure applications. Typically 1/16" OD tubing holds up to 62 bar (900 psi) and 1/8" up to 35 bar (500 psi). Maximum continuous operating temperature is 100°C.NOTE: To Order or Request a Quote for tubing sold as Per Foot or Per Meter, please add the product to your cart. By clicking on the PENCIL ICON beside the Product Number, you may then enter the length required in the Product Comments box.