EJ Beverage Ultra Barrier Silver tubing is constructed of a unique compound that provides for an excellent alternative to PVC. The silver lining used in Beverage Ultra Barrier Silver has been proven to be 100% effective against the top 4 beverage spoiling bacteria up to 2,000 liters flow. Advantages to this unique tubing are:,,,Antimicrobial - 100% effective against top 4 beverage spoiling bacteria,,,PVC Free and BPA Free - Contains no DEHP, phthalates or other plasticizers,,,Environmentally friendly production = does not emit dioxins,,,Extremely low extractable / extremely low leachables,,,High flexibility,,,Remains flexible at lower temperatures,,,Ultra-low permeability,,,Barrier properties,,,Temperature range of -40 to 125° F,,Sold by the foot. 1/4" is used in beer lines that are 10-25' in length. It is also used as gas line when you want a really tight fit, particularly with homebrew quick disconnects. Soak 1/4" line in hot water before atttaching to larger 5/16" fittings.,,Technical Specifications: 1/2" Outer Diameter. 1/4" line provides .65 lbs of restriction per foot. Ideally pounds of resistance should equal pounds of applied pressure. 1/4" line holds 1/3 of an ounce per foot. PVC Free.,Quantity ordered will be shipped as a single uncut length. Maximum length available is 100 ft.