AquaLock tubing is produced from a high performance, cross-linked Polyethylene material. AquaLock tubing is NSF listed and FDA recognized. The linear low density polyethylene tubing is made for use with our quick-connect fittings and valves. The AquaLock tubing has good chemical resistance to alkalies, dilute acid, ammonia gas, ammonium hydroxide, brine water, and most aqueous solutions of metallic salts. NOTE: This listing is for tubing sold by the foot. Any length of tubing that is less than a full coil must be custom cut and is non-returnable. Only complete, unaltered coils may be returned.