A high performance carbon black copolymer concentrate designed specifically for implant blending with high density natural pipe resins. G38-70C is used in combination with K44-06-122, K44-08-122, or K44-15-122 to produce a black high density pipe which meets the requirements for a PE3408 rating as recognized by the Plastics Pipe Institute. The resulting formulation so produced is listed under NSF Standard 14 for the transport of portable water. Carbon black loading is 30% per ASTM D 1603. |