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Another article on the same topic:


Making the disk is easy coming up with the nano-silver paint is the trick.

Buy them here: http://www.bbisolutions.com/search?q=%2Bnanoparticle+%2Bcolloidal+%2Bsilver%3Cvaries%3E&gclid=CJPug8ms-b0CFYyhOgodmXIAaQ

The filters are made of local clay, sawdust and water. Those materials are mixed and pressed into a mold. The result is a flowerpot-shaped filter, which is then fired in a kiln. The firing burns off the sawdust, leaving a ceramic with very fine pores. The filter is then painted with a thin solution of silver or copper nanoparticles that serve as a highly effective disinfectant