Ultrapure Water

Experience shows that a single water treatment process cannot efficiently deliver the high purity water required for ultrapure water applications. Optimum water treatment solutions take advantage of the specific capabilities of reverse osmosis (RO), ion exchange and other technologies. Unique in the industry, Dow develops, manufactures, and offers a comprehensive range of RO membrane elements and ion exchange resins.

We offer a complete line of FILMTEC™ semiconductor grade RO elements and DOWEX™ MONOSPHERE™ ultrapure water grade ion exchange resins to meet the most stringent water purity standards required to produce ultrapure water for today's semiconductor devices.

Product	Description	Type	Matrix	Total Exchange Capacity* eq/l (kgr/ft3)	Available Forms
DOWEX MONOSPHERE 650C UPW (H)	A uniform particle size strong acid cation resin for single or mixed bed demineralization for ultrapure water production.	Strong Acid Cation	Styrene-DVB, Gel	1.9 (41.5)	H+
DOWEX MONOSPHERE 550A UPW (OH)	A uniform particle size strong base anion resin for single or mixed bed demineralization for ultrapure water production.	Strong Base Anion	Styrene-DVB, Gel	1.0 (21.9)	OH-
DOWEX MONOSPHERE MR-3 UPW	A separable uniform particle size mixed bed ion exchange reins for ultrapure water production.	Mixed Bed	Styrene-DVB, Gel	1.9 (41.5) 1.0 (21.9)	H+ and OH-
DOWEX MONOSPHERE MR-575 UPW	Uniform particle size mixed bed resin for ultrapure water applications.	1.2 : 1 by equivalent cation : anion	Styrene-DVB, Gel	1.0 (21.8) 2.3 (50.3)	OH- and H+
DOWEX MONOSPHERE MR-450 UPW	A non-separable uniform particle size mixed bed ion exchange reins for ultrapure water production.	Mixed Bed	Styrene-DVB, Gel	1.9 (41.5) 1.0 (21.9)	H+ and OH-

* Note: Resin ratio of anion to cation is volumetrically optimized to achieve maximum removal of boron, silica, and other sensitive ions.