Product Introduction PHPA Powder for Drilling Fluid Stability Across pH 5-14 The family TDS states an effective pH range of 5-14, but system stability still depends on water chemistry, additives, temperature, and exposure time. BLUFLOC powder PHPA is described in the supplied family TDS as a water-soluble copolymer of anionic character used in drilling-fluid and selected oilfield applications. The four powder grades span very-high and ultra-high molecular-weight classes with