WEB EXCLUSIVE: A brand-new purging agent from Sun Plastech Inc., Parsippany, N.J., is designed for purging high-temperature engineering resins such as PEEK, PPS, Ultem PEI, and LCP from injection machines and extruders. Asaclean PX is a glass-filled grade that can be used at 518 to 788 F. It’s said to emit low smoke and odor during high-temperature purges. Also available is unfilled Asaclean SX for hot-runner cleaning or machine shutdowns. Its use-temperature range is 570 to 735 F.