Air purifiers, namely air purification units, apparatus and machines; air purifying units for household and commercial use; filters for air purifiers; HEPA filters for household use; vehicle-mounted air purifying apparatus; water treatment equipment, namely water filtration and purification units and apparatus; water filtration bottles sold empty; water bottle filtration systems; water filter straw purifying systems; cartridge filtration units and reverse osmosis units; membrane filtration units for water treatment apparatus; replacement cartridges and filters for water filtration and purification units; filtering apparatus using activated carbon for filtering spirits; membrane filter cartridges for the separation of biomolecules in biopharmaceutical production; plumbing fittings, namely, faucet filters to purify water; tap-water purifying apparatus to purify water; none of the foregoing related to sprinkler systems, irrigation, swimming pools, or waste treatment.