Abstract: A method is provided for sealing a first end of a plurality of liquid-filtration membranes, each having a hollow tubular shape. The method comprises: providing adhesive in a storage vessel; immersing the first ends of the liquid-filtration membranes into the adhesive up to a first length; applying a driver liquid above the adhesive, wherein the driver liquid is less dense than the adhesive, such that a weight of the driver liquid applies a force so as to drive adhesive into an interior of each liquid-filtration membrane up to a second length along the first ends, that is greater than the first length; removing at least some of the driver liquid; solidifying the adhesive; cutting the plurality of liquid-filtration membranes at a point that is between the first length and the second length such that the first ends of the liquid-filtration membranes are disconnected from one another.