Three clear, biocompatible polycarbonates with improved flow were introduced for medical devices by GE Plastics, Pittsfield, Mass. Two grades are members of a brand-new family of PC copolymers that not only achieve better flow than standard PC resins—without additives—but are also self-lubricating to provide easy release from complex molds. Lexan HPX8R has 35 MFR; Lexan HPX4 has 10 MFR but higher low-temperature ductility, much improved hydrolytic stability for repeated autoclave sterilization, and higher impact strength. For applications that don’t require all the features of the premium-priced HPX copolymers, GE also introduced Lexan HP1HF, a biocompatible conventional PC with high flow (37 MFR) and outstanding hydrolytic stability. The photo shows a ResMed bilevel device to assist sleep apnea patients. It is in-mold decorated with a Lexan film that is overmolded with Lexan HP1HF.