the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > filtering or percolating > [adjective] > filtered or percolated (4)
That has been filtered; that has been subjected to filtration.
That has percolated or has been percolated.
(a) that has been subjected to the action of percolating liquid; (b) (also leached-out) that has been removed by percolating liquid.