Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Air purifying apparatus and machines; Apparatus for disinfecting water; Apparatus for filtering drinking water; Apparatus for purifying tap water; Aquarium filters; Coffee machines incorporating water purifiers; Fibrous filtering media for general industrial use in the purification of air and industrial fluids; Industrial-water purifying apparatus; Installations for the purification of gas; Sewage pur...