Both ion exchange resins and mem-branes have been used for decades in the field of quality control of drinking water. Ion exchange resins were first used to provide potable drinking water to homes in mid-1900s. At the same time, the U.S. military used resins to provide drinking water as a replacement to the Lister Bags that were used in World War II. The military then began to conduct a series of tests of these resins at various temperatures. However, the resins were soon overtaken by membranes, which then were subjected by the military to the same tests that were being conducted on resins. However, both these technologies now have a variety of new applications. In this article, we will examine the current uses of resins and membranes for the provision of potable water.
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