UPS (Uniform Particle Size): The Key to Greater Productivity in Ion Exchange

What is UPS? In ion exchange, resin beds that contain beads with the same size particle diameter are called UPS or uniform particle size resins. These resins offer a number of process advantages over conventional Gaussian particle size resin beads. For many years, UPS resins could only be produced by screening conventional Gaussian resins - a cost-prohibitive process. In the 1980s, Dow researchers developed and patented a technology to produce UPS ion exchange resins without a mechanical screening process.

Why is UPS better? While conventional resin beads range in size from 50 to 16 mesh, or 300 to 1200 microns, UPS resins have a much narrower particle size distribution, with 95 percent of the beads within 100 microns of the average particle diameter. UPS technology brings performance advantages such as regeneration efficiency, greater operating capacity, less resin loss, increased resistance to organic fouling and more. In short, UPS delivers greater productivity in ion exchange. Learn more.

Why choose Dow for UPS resins? As the world's first supplier to master UPS technology, Dow continues to lead the industry in providing high-performance UPS ion exchange resins. Dow offers customers UPS ion exchange resins with the greatest uniformity and reliability. And, customers can choose from two product lines that offer distinct performance advantages:

DOWEX™ MARATHON™ UPS resins are designed for regenerable systems to run longer and use less regenerant, providing good quality water at the lowest possible operating cost.

DOWEX™ MONOSPHERE™ UPS resins are designed for applications that call for the highest quality water, with good productivity as a secondary requirement.

Advantages of UPS Resins

Less Regeneration Chemical Consumption

Greater Operating Capacity

Better Rinse Efficiency

Reduced Leakage

Less Resin Loss

Lower Pressure Drop

Similar Expansion Characteristics

Increased Organic Fouling Resistance

Advantages of UPS Resins in Mixed Beds

Faster Kinetics

Better Separation

Better Color Differentiation

Higher Physical Integrity

Reduced TOC Leachables

®™^* Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

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UPS (Uniform Particle Size): The Key to Greater Productivity in Ion Exchange