Membrane Filter (10 A thin microporous material of specific pore size used to filter bacteria, algae, and other very small particles from water. (2) Filter made of plastic or modified cellulose and having a known pore diameter. Such filters are used in the bacteriological examination of water and the separation of suspended matter before laboratory analyses. In additional to their analytical use, these filters area also used for public health purposes as well as for the sterilization of liquids. The membranes are available in a variety of sizes, with a diameter of 47–50 millimeters being the most common. Membrane filter water purification technologies are rapidly emerging as a viable and cost effective water treatment option for municipalities confronted with complex regulatory issues and increasingly stringent water treatment regulations. Membranes can be used as the primary means to remove materials from water, but they can also be used in conjunction with other physical, chemical, or biological processes to either separate the phases of water treatment or isolate specific organisms. More properly referred to as a semipermeable membrane filter.
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Author of the Water Words Dictionary source of text: Gary A. Horton
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