Filters, heaters and pumps sold in combination for use in swimming pools; Water filtration and purification units and replacement cartridges and filters therefore; Filters for fluids, namely, for water and area-water solutions; Water filtering units for domestic and commercial; Filters for drinking water; Water filtering, producing potable water for domestic use and commercial use; Water filtering units for aquariums; Fibrous filtering media for general industrial use in the purification of air and industrial fluids; Membrane filter cartridges for the separation of biomolecules in biopharmaceutical production; Water filtration and purification units and replacement cartridges and filters therefor for refrigerators, ice makers, faucet filters, tap water, shower head and under the sink; Filters made of fiber for water filtration; Apparatus for filtering drinking water; Aquarium filters; Filtering apparatus using activated carbon for filtering spirits Water filters; Personal water filtering devices in the form of straws; Household tap-water filters