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APS TechNotes See all articles

About Silver Impregnated Carbon Useless Sales Tactic

From North Dakota State University

Silver impregnated carbon

Some compounds of silver have been used as disinfectants. Silver has been added to certain activated carbon filters as a solution to the bacteria problem. Unfortunately, product testing has not shown silver impregnated activated carbon to be much more effective in controlling bacteria than normal activated carbon filters. Only in the first month of operation did there appear to be any advantage to using an activated carbon filter that contained silver.

EPA requires registration of all types of water treatment equipment that contain an active ingredient for the purpose of inhibiting the growth of microorganisms. Registration does not guarantee that the product is effective. It only guarantees that the active ingredient will not leach from the filter at levels that would be a health hazard.

The best method for controling bacteria in carbon beds it to install ultraviolet sterilization.

If someone is trying to sell you silver impregnated carbon they are trying to fool you.

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