Point-of-use processing

One important class of point-of-use processes utilizes a porous polymer containing reactive metals. Variations in the metal and polymer chemistry are made to optimize the process for different gas appHcations. This is an active area of development and purifiers are available for most of the principal specialty gases. 

A more recent development is the use of UF for point-of-use processing. When UF is installed in the central system, the plastic (PVC) piping to the various rinse stations collects particles and leaches organics. A small 4 gpm hollow fiber unit at the rinse station removes all particles, colloids and organics down to an average size of 0.005 p. In some cases, these units are operated dead-ended with a periodic fast-forward flush to remove accumulated particles inside the hollow fibers. 

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See also in sourсe #XX -- [ ]

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