7
Fruit washing machines; Machines for washing food [electric]; High-pressure pumps for washing appliances and installations; Vegetable washers [machines]
9
Ozonisers [ozonators]; Chromatography columns; Separation columns for scientific purposes; Separation columns for measuring purposes; Distillation columns for laboratory use; Vacuum distillation columns for laboratory use; Liquid chromatography columns for scientific use
11
Neutralisation columns; Rectification columns; Columns for physical separation of fractions; Chromatography columns for industrial use; Extraction columns [other than laboratory apparatus]; Columns for physical-chemical separation of fractions; Vacuum distillation columns for industrial use; Sewage treatment [purification] installations; Membrane purifying apparatus for the purification of water; Water purifying apparatus; Water purification units; Filters for water purifiers; Water purification installations; Wastewater purification units; Sewage purification apparatus; Water purification tanks; Electric bath-water purifying apparatus for household purposes; Electric water purifiers for household purposes; Power filters for water purification [other than machines]; Industrial waste water purification plants; Purification installations for sewage; Water purification, desalination and conditioning installations; Rainwater purification installations; Water purifying units for producing potable water; Water purifiers for industrial use; Ionization apparatus for the treatment of air or water; Waste water treatment tanks; Waste water treatment tanks for household purposes; Wastewater treatment tanks for industrial purposes; Water disinfection apparatus; Disinfectant apparatus; Dish disinfectant apparatus for industrial purposes; Sterilization, disinfection and decontamination equipment