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Praxair’s In-Situ Oxygenation (I-SO) System is a mechanical oxygenator that can dissolve as much as 82 percent of the high-purity oxygen into water. Aerating with the system in addition to using high-purity oxygen can increase biotreatment capacity, significantly lower VOC emissions, reduce foam formation, reduce electrical power usage, and allow for greater variations in oxygen demand. 800-772-9247; www.praxair.com

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