35 On-line wholesale and retail store services in the field of chemicals for the treatment, purification and disinfection of water or waste water, chemicals used for water conditioning, chemicals used for clarifying water, ion exchangers being chemical preparations, especially ion exchange resins, bacteria and other types of microorganism for waste water treatment, and biological preparations for the treatment of water; on-line wholesale and retail store services in the field of apparatus for measuring and dosing chemicals for use in the field of the treatment, purification, conditioning, disinfection and clarification of water or waste water, apparatus for checking water quality, including drinking water, and parts and components of the aforesaid goods; on-line wholesale and retail store services in the field of apparatus and installations for the purification of water and waste water, apparatus and installations for clarifying water, apparatus and installations for the treatment of water and waste water, including by settling or flotation, filter apparatus and installations for the treatment and purification of water, filters for use in the treatment and purification of water, apparatus and installations for filtering water, including by ultrafiltration, nanofiltration and microfiltration, reverse osmosis filtration units being water treatment equipment, apparatus and installations for softening water, apparatus and installations for water demineralization, ionization apparatus for water treatment, electrodeionization apparatus for water treatment, apparatus and installations for treating water by means of remineralization, apparatus and installations for desalination of water, apparatus and installations for treating water by ultraviolet irradiation, pure steam generators, apparatus and installations for degasification and decarbonization intended for water treatment, apparatus and installations for purification of waste water, bioreactors for the treatment of water or waste water, apparatus and installations for recycling and re-use of waste water, apparatus for disinfecting water, and parts and components of the aforesaid goods; commercial business consultancy services in the field of chemicals for use in the field of the treatment, purification and disinfection of water or waste water, chemicals used for water conditioning, chemicals used for clarifying water, ion exchangers being chemical preparations, especially ion exchange resins, bacteria and other types of microorganism for waste water treatment, and biological preparations for the treatment of water; commercial business consultancy services in the field of measuring and dosing chemicals for use in processing, purification, softening, disinfecting and clarification of water or waste water, apparatus for checking water quality, including drinking water, and parts and components of the aforesaid goods; commercial business consultancy services in the field of apparatus and installations for the purification of water and waste water, apparatus and installations for clarifying water, apparatus and installations for the treatment of water and waste water, including by settling or flotation, filter apparatus and installations for the treatment and purification of water, filters for use in the treatment and purification of water, apparatus and installations for filtering water, including by ultrafiltration, nanofiltration and microfiltration, reverse osmosis filtration units being water treatment equipment, apparatus and installations for softening water, apparatus and installations for water demineralization, ionization apparatus for water treatment, electrodeionization apparatus for water treatment, apparatus and installations for treating water by means of remineralization, apparatus and installations for desalination of water, apparatus and installations for treating water by ultraviolet irradiation, pure steam generators, apparatus and installations for degasification and decarbonization intended for water treatment, apparatus and installations for purification of waste water, bioreactors for the treatment of water or waste water, apparatus and installations for recycling and re-use of waste water, apparatus for disinfecting water, and parts and components of the aforesaid goods