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Semiconductor, Display (water treatment )
Ultrapure Deionized Water
DI water is necessary in clinical and medical laboratories, where its addition to various reagents and solvents enable accurate measurements, often on automated machines which use very little specimen DI water is also use extensively in the semiconductor industry to process and clean silicon wafers and sometimes in the optics industry when very highly clean optical sufaces are required for coating. DI water is also often used as a final rinse when washing scientific glassware.
Deionized Water
Deionized water is water that lacks ions, such as cations flom sodium, calcium, iron, copper and anions such as chloride and bromide. This means it has been purified from all other ions except H3O+ and OH- , but it may still contain other non-ionic type of impurities such as organic compound. This type of water is produced using an ion exchange process. Deionized water is similar to distilled water, in that it is useful for scientific experiments where the presence of impurities may be undesirable.
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