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Purism is most simple water purifier that is comprised of four different types of filters for water purifiers. It is designed to be carried anywhere, any situations such as disaster area. It is more affordable and effective than other water purifiers with aid purpose. 1st and 2nd filters can remove physical particles such as sand or gravel.
3rd filter is coated with activated carbon powder. In this level, activated carbon is filtering organic compounds and odor, makes odorless water by removing an unpleasant smell or taste. The last filter is coated with silver nano particles which kill diseases like cholera, E. coli and typhoid.
University of Tsukuba