Abstract: A heat exchange element, particularly suitable for use as a recuperator for external combustion engines or other multiple fluid flow path body, may be produced as a monolithic, ceramic, honeycombed body having a plurality of flow paths therethrough for two or three fluids wherein multiple flow paths of separate fluids are separated by walls which may be less than 10 mils thick.The honeycombed ceramic body is provided with a plurality of open-ended cells extending from one face end to another face end and arranged in vertical columns of cells separated by vertical fluid barrier wall surfaces. Selected columns of open-ended cells are closed on both face ends of the body and entrance to and exit from the selected cells is provided by removing portions of cell walls near face ends of the body between fluid barrier wall surfaces.

Abstract: A heat exchange element, particularly suitable for use as a recuperator for external combustion engines, or a body for use as an afterburner or in filtration and osmosis, may be produced as a monolithic, ceramic, honeycombed body having a plurality of flow paths therethrough for two or three fluids wherein multiple flow paths of separate fluids are separated by walls which may be less than 10 mils thick.In a preferred method, a honeycombed ceramic body is provided with a plurality of open-ended cells extending from one face end to another face end and arranged in vertical columns of cells separated by vertical fluid barrier wall surfaces. Selected columns of open-ended cells are closed on both face ends of the body and entrance to and exit from the selected cells is provided by removing portions of cell walls near face ends of the body between fluid barrier wall surfaces.

Abstract: An apparatus for transferring fluid including a pipet or other similar vessel having an open top end and an open bottom end; a pipet-operating assembly including means for retaining the top end of the pipet; a flexible suction and pressure tube operatively connected to the pipet retaining means; vacuum-operated syringe means connected to the suction and pressure tube for aspirating a preselected amount of liquid into the pipet and for discharging the liquid from the pipet; tubular means for supplying a partial vacuum to the syringe means; and flexible, tubular means for selectively venting the supply of partial vacuum to the syringe means, the pipet-operating assembly including venting valve means for opening and closing the tubular venting means.

Abstract: Apparatus for separating feed solution, such as chrome or nickel plating rinse solutions, into a concentrated liquor portion and a solvent portion, comprising vertical shell and tube evaporator means for generating a stream of vapor and entrained droplets; first impingement means for separating a first liquor portion from the stream; second impingement means for separating a second liquid portion from the stream; mesh entrainment pad means for separating a third liquor portion from the stream to form a stream consisting essentially of pure solvent vapor; reduced pressure generating means for drawing the stream from the evaporator tubes through the impingement and mesh entrainment pad; capacitance means for accumulating a preselected volume of the first, second, and third liquor portions above the lower end of the evaporator; and conduit means for recycling liquor from the capacitance means to the evaporator means.