Go to
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and select advanced search. Put in "activated charcoal"in the exact phrase box and put in "filter" in the required words box. You will find many links which you will have to sort, as some are air filters , etc. For one example,
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has activated charcoal filters designed for a coffemaker or two. Also chemical supply houses sell activated charcoal in bulk that you probably could hold in place with a paper coffee filter. However, at least in the US, most chemical supply houses will not sell to the general public. In addition some water filters that attach to faucets have a smal activated charcoal filter to remove impurites from water. However you probably would have to apply pressure to the spirits to force them through this filter in a reasonable time. Also you would have to make certain that any plastics, o-rings, and gaskets used in the filter can be used with a solution of about 50% alcohol in water. This is a wine group, and most of us have had little experience in processing spirits.
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