11
Water conditioning units; Water conditioning installations; Transportable instruments for processing water; Water treatment filters; Water treatment apparatus for water softening; Ultraviolet sterilization units [water treatment equipment]; Reverse osmosis filtration units [water treatment equipment]; Chemical sterilization units [water treatment equipment]; Ionization apparatus for the treatment of water; Installations for water treatment under osmotic process; Water filtering units; Electrostatic filters for water filtration; Appliances for water filtration [other than machines]; Water filtering apparatus; Ultra-violet water sterilisation units for industrial use; Ionization apparatus for the treatment of air or water; Reverse osmosis elements for industrial use in reducing the salt content of water; Water filters for industrial purposes; Water filtering installations; Water filtering apparatus for industrial use; Separators for scrubbing gas; Gas cleaners and purifiers; Electrostatic precipitators for cleaning gases; Filters for cleaning gases [parts of household or industrial installations]; Filters for gases [household or industrial installations]; Gas chromatography apparatus for industrial use; Gas recovery apparatus; Recuperative gas furnaces; Gas purification installations; Reactors for gas-solids reactions; Reactors for gas-gas reactions; Industrial treatment installations; Water purification, desalination and conditioning installations
42
Technological research; Research in the field of technology provided by engineers; Water analysis; Environmental testing services to detect contaminants in water; Technical design and planning of water purification plants; Water quality control services; Engineering services for the gas industry; Technical design and planning of pipelines for gas, water and waste water