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 as a 100 foot roll. 3/16" is the best size for most beer lines under 9' in length. Ideally, 6' provides the correct restriction for serving beer in the 8-14 psi range. Technical Specifications: 3/16" line provides 2.2 lbs of restriction per foot. Ideally pounds of resistance should equal pounds of applied pressure. 3/16" line holds 1/6 of an ounce per foot. PVC Free. 7/16" OD