WaterSolutions Ion Exchange Resins

Ion exchange is the reversible interchange of ions between a solid (the ion exchange resin) and a liquid. Since they act as "chemical sponges", ion exchange resins are ideally suited for effective removal of contaminants from water and other liquids. This technology offers a number of advantages in industrial water demineralization and softening, wastewater recycling and other water treatment processes-including high water recovery, low volume of waste and operational flexibility. Ion exchange resins are also used in a variety of specialized applications such as chemical processing, pharmaceuticals, mining, and food and beverage processing. DOWEX™ and AMBERJET™ are among the world's leading brands of ion exchange resin technology, backed by Dow's more than 60 years of experience in this area.

---

Fine Mesh For the high levels of selectivity, consistency, and relability in column separations, an idea choice is DOWEX™ spherical fine mesh ion exchange resins. DOWEX fine mesh resins are produced by selectively controlling the suspension polymerization technology used to produce our standard 16 - 50 mesh industrial resins. Also used in food and pharma processing.

Inert Resins Inert resins are used in systems requiring special hydraulic considerations. Also used in food and pharma processing.

Mixed Resins Mixed resins offer a convenient solution for applications which require a mixture of two components, typically strong acid cation and strong base anion resin. Also used in food and pharma processing.

Strong Acid Cations Strong acid cation resin is used for water softening in the Na cycle and for demineralization when the temporary hardness in the feed is < 40%. Also used in food and pharma processing.

Strong Base Anions Strong base anion resin type I as a single resin is particularly recommended for treating low FMA (Free Mineral Acid) water with high silica and where low silica leakage is required (-20 ppb in counter-current operation). Also used in food and pharma processing.

Other Resins For high levels of consistency and relability in chromatographic separations, Dow Water & Process Solutions resins are an ideal choice.

Weak Acid Cations Weak acid cation resin is used as a single resin for dealkalization in the H cycle and for brackish water softening in Na cycle. Also used in food and pharma processing.

Weak Base Anions Weak base anion resin is used as a single resin to obtain partially deionized water without removal of CO2 and SiO2. Also used in food and pharma processing.

Food Grade DW&PS Nutrition products Dowex™, Amberlite™, Duolite™ and IMAC™ ion exchange resins and adsorbents, designed to meet FDA and other regulations include dedicated regulatory and technical support expertise.

Pharma Grade The Dow Water and Process Solutions (DW&PS) Healthcare group provides a wide variety of different resin chemistries and expertise specifically targeted for biopharmaceutical processes. DW&PS Healthcare products include Amberchrom™ CG and XT reversed phase resins, Amberlite™ XAD and Dowex™ adsorbents, Amberlite™ FP-grade and Dowex™ ion exchange resins and Dowex™ Fine Mesh ion exchange resins.