Surface fluorination on these polyethylene (PE) carboys reduces solvent absorption and permeation. Both feature molded graduations in liters and gallons and a stainless steel handle. Model 62502-10 has sturdy hand grips. Replacement spigot, a 100-mm fluorinated polypropylene closure that accepts 5⁄8" ID tubing, is made of Tefzel® ETFE. UN-approved.