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Description
DuPont™ AmberTec™ MR-450 UPW H/OH Ion Exchange Resin is an ultrapure watergrade, non-separable, homogeneous, mixed bed resin recommended as a point-of-use or non- regenerable mixed bed in the polishing loop to achieve sub-ppb levels of soluble silica, boron, sodium, potassium, sulfate, chloride, zinc, iron, and aluminum. This nonregenerable mixed bed resin is used for 2 – 3 years before replacement. This homogeneous mixed bed contains 360-µm cation resin and 590-µm anion resin (mean particle size), thus providing efficient kinetics to achieve a higher operating capacity. The ratio of anion to cation in AmberTec™ MR-450 UPW H/OH is volumetrically optimized to achieve maximum removal of boron and silica. Semiconductor-grade is characterized by the high conversion to ionic sites (≥ 95.0%). As shown in Figure 2, the excellent rinse characteristics also allow very efficient online operation.
Applications
Non-regenerable, polishing mixed bed
Historical Reference
AmberTec™ MR-450 UPW H/OH Ion Exchange Resin has previously been sold as DOWEX MONOSPHERE™ MR-450 UPW Ion Exchange Resin.
Typical Properties
