WaterSolutions Ultrapure Water

Ultrapure water (UPW) is generally considered to be >18.2 MΩ-cm resistivity at 25ºC, low ppt in metals, less than 50 ppt in inorganic anions and ammonia, less than 0.2 ppb in organic anions, and below 1 ppb total organic carbon (TOC) and silica (dissolved and colloidal). Particle levels are reduced using the best available ultrafiltration technology. Bacteria are present, on surfaces and to a lesser degree in the bulk fluid, and controlled to very low levels, typically

A single water treatment process cannot effectively deliver the high-purity water required for ultrapure water applications - optimum water treatment solutions utilize reverse osmosis, ion exchange and other technologies. Dow offers a complete line of brackish water and semiconductor-grade reverse osmosis elements and ion exchange resins to meet stringent water purity standards required in semiconductor devices.

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