11 Water, waste water, sewage, effluent, fluid, liquid, air and gas purification apparatus, instruments, installation, machines and plant; purification apparatus, instruments, installations, machines and plant containing adsorption material; water, waste water, sewage, effluent, fluid, liquid, air and gas treatment apparatus, instruments, installation, machines and plant; treatment apparatus, instruments, installations, machines and plant containing adsorption material; apparatus and installations for the removal of heavy metals, color forming compounds, surfactants, compounds that give taste, halogen compounds, radioactive compounds, hydrocarbon compounds, organic compounds, and inorganic compounds from water or other fluids; apparatus and installations for the treatment of water to improve its quality for the purposes of drinking, or for the manufacture of food or pharmaceuticals; apparatus and installations for the treatment of waste water to remove contaminants, to improve its suitability for discharge or for re-use; apparatus and installations for the removal of volatile or gaseous substances from air or other gases; parts and fittings for all the aforementioned goods