Purgex™ 602 Plus Commercial Purging Compound is a ready-to-use blend consisting of active ingredients with a polystyrene carrier. Purgex™ products have mechanical activity for efficient cleaning, foaming action for enhanced mixing and a lubricant for easy removal. Purgex™ thoroughly and safely cleans injection molding machines and hot runner systems. All active ingredients in Purgex™ are Generally Recognized As Safe (GRAS) by the US FDA. Physical Description: - Blend, polystyrene and an FDA-approved active component - Non-toxic, non-abrasive, and safe - Ready to use and easy to remove Features & Benefits: - Specifically designed for clear resins, Purgex™ 602 Plus efficiently removes residual contamination from the screw and barrel in injection molding machines and extruders and effectively cleans hot runner systems. - Purgex™ 602 Plus performs fast and efficient color and material changes with PC and PS resins and their copolymers. - Purgex™ 602 Plus greatly reduces/eliminates the haze that is often left after purging with polyolefin-based purging compounds. - The active ingredients in Purgex™ 602 Plus help prevent degradation of the polystyrene carrier. - With regular use, Purgex™ forms a temporary barrier which protects steel surfaces from oxidation, extending the cleaning process.