Unless I'm missing something important, isn't the Milbank filter simply a tightly-woven canvas bag with a handle? All it has to do is filter out the chunks -- it doesn't have to catch viruses.
Wouldn't they be simple to make?
Sue
well the millbank bag is indeed made of a very tightly woven canvas, which swells up when you pre soak it for use. It's also threatened to prevent it from getting moldy. It's very simple and indeed easy to make.... if you can find the right quality cloth.
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