In August 2010, Pure Aqua Inc. designed and manufactured a commercial double pass BWRO device for a major company in California, USA. This device was designed to produce 3,000 GPD of permeate from a city water feed of 500-800 ppm TDS. The double pass RO unit feeds water through the first three membranes which produce 4 GPM of product then passed through the second pass which produces 2 GPM of product at an anticipated TDS of less than 5 ppm. The device came complete with a carbon filter and water softener. For more information click here: pureaqua.com/brackish-water-ro.html

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