HYPERTHERM -2399 NT BIMODAL POLYETHYLENE Resin is a Polyethylene resin with raised temperature capability produced using UNIPOL II process technology. This product is intended for use in piping systems where high temperatures and aggressive oxidation conditions exist. Suitable applications include hot and cold potable water. Industrial Standards Compliance: ASTM D 3350: cell classification PE445574A Plastics Pipe Institute (PPI): TR-4 - Natural Pipe - HYPERTHERM 2399 NT BIMODAL POLYETHYLENE Resin -- ASTM PE4710 pipe grade - 1600psi HDB @ 23°C -- ASTM PE4710 pipe grade - 800psi HDB @ 82.2°C NSF International - Natural Pipe - HYPERTHERM 2399 NT BIMODAL POLYETHYLENE Resin -- Standard 14 and 61 Meets requirements of - ASTM F2769, F2623, & F1281