Water filtration and purification units and replacement cartridges and filters therefor; Waste water purification apparatus, installations and tanks; Separators for the cleaning and purification of liquids; Gas injectors for disbursing solids and/or liquids for purification and sterilization purposes; water filters; filtration units, namely, water filtering units for commercial and industrial use; filter cartridges, filter housings and parts thereof for use with water filtration and purification units; ultrafiltration membranes and filters for water filtering apparatus; cartridges, filters and membrane absorbers for trace contaminant removal for use with external filtering device for removing contaminants from water in industrial processes; filtration and purification devices, namely, e.g., water purification installations for industrial processes; filters for sterilizing air, gas and liquid streams
Environmental Control Apparatus