BLUFLOC PHPA Emulsion · Protective-Colloid Screening PHPA Protective Colloid for Shale and Drill-Cutting Stability Screen EC8050 and EA5620 across a controlled dose window to balance surface protection, cuttings stability, particle bridging, and drilling-fluid rheology. Protective-Colloid Evaluation Very High Molecular Weight 38-40% Solid Content EC8050 & EA5620 01 Product Introduction Protective-colloid behavior describes how hydrated polymer can associate with dispersed