Abstract: The present invention relates to a primary liquid filtration/stabilization installation comprising in combination, a liquid in-feed line, a conventional dosing tank system for single use filter-aid and/or stabilization-aid, and an alternate dosing/storage tank system for regenerable filter-aid and/or stabilization-aid, wherein the installation is adapted to selectively operate one or the other of the dosing systems to meter doses of their respective charges into liquid that is delivered through the in-feed line, and a filter adapted to retain filter-aid material thereon, while passing liquid from which retained material has been removed.