Air purifiers; Apparatus for disinfecting water; Germicidal lamps; Lamp bases; Lamp reflectors; LED light bulbs; Mercury lamps; Sanitizing apparatus using ultraviolet light for sanitizing linens and surfaces of objects not for medical purposes; Tap-water purifying apparatus; Ultraviolet lamps used for aquariums; Ultraviolet ray lamps, not for medical purposes; Water conditioning units; Water filtration and purification units and replacement cartridges and filters therefor for refrigerators and ice makers; Water purification units; Water purifying units, for potable water for domestic, commercial or industrial use; Water treatment equipment, namely, ultraviolet sterilization units