7 COMPOSITE FILTERS MADE OF POROUS CERAMIC MATERIALS, NAMELY, SINTERED OR NON-SINTERED METAL OXIDES, AS PARTS OF DEVICES OR ENGINES, FOR USE IN THE FILTRATION INDUSTRY AND THE CHROMATOGRAPHY INDUSTRY, NAMELY TANGENTIAL FILTRATION, SUCH AS, MICROFILTRATION, ULTRAFILTRATION, NANOFILTRATION AND REVERSE OSMOSIS, FOR ANY LIQUID; COMPOSITE FILTERS MADE OF POROUS CERAMIC MATERIALS, NAMELY, SINTERED OR NON-SINTERED METAL OXIDES, AS PARTS OF DEVICES OR ENGINES, FOR THE SEPARATION OF LIQUIDS AND GASES IN THE FILTRATION INDUSTRY AND THE CHROMATOGRAPHY INDUSTRY