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High purity mixed bed resins for the ultrapure water market.
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To achieve the ultimate ultrapure water quality for the electronics industry, extensive treatment is needed. This normally requires a pretreatment stage followed by what is sometimes referred to as primary treatment that comprises Reverse Osmosis (RO) or Ion Exchange (IE) Make-Up water plants, or more often, a combination of both to achieve a resistivity of 12 – 17 MΩ·cm. To achieve the ultrapure water quality, i.e. resistivity > 18.2 MΩ·cm, a final polishing stage, comprising a recirculation loop and a point of use treatment using special UPW resin grades, is required.
Purolite's all round technical capability and extensive range of products enables us to assist end users in all three phases of ultrapure water UPW production:
Demineralization - Ultrapure Water