POREX FILTRATION CASE STUDY Page 1 of 4 POREX ® Tubular Membrane Filter (TMF)™ Applied in Die Saw Wastewater Reclaim System for a Microelectronics Company in Shenzhen, China. Die sawing and backgrinding are processes which are used to cut large silica wafers into smaller discs. After either of these processes, the wafer chips must be rinsed with Ultrapure Water (UPW) to remove fine silica particles and any other contaminants. Backgrinding

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