1
Chemicals for the treatment of waste water; Chemical products for the treatment of drinking water
9
Measuring, detecting and monitoring instruments, indicators and controllers; Hardware and software; Electronic switchgear
11
Purification installations for sewage; Drinking water treatment installations; Sewage disposal plants; Plastic tanks for the treatment of waste water and for the treatment of drinking water, precipitation and flocculation installations; Flotation installations for the treatment of waste water and for the treatment of drinking water; Emulsion separation installations for the treatment of waste water and for the treatment of drinking water; Microfiltration installations for the treatment of waste water and for the treatment of drinking water; Ultrafiltration installations for the treatment of waste water and for the treatment of drinking water; Reverse osmosis installations for the treatment of waste water and for the treatment of drinking water; Electrolysis installations for the treatment of waste water and for the treatment of drinking water; Ion exchange installations for the treatment of waste water and for the treatment of drinking water; Decontamination and neutralisation installations for the treatment of waste water and for the treatment of drinking water; Chemical oxidation installations for the treatment of waste water and for the treatment of drinking water; Evaporating installations for the treatment of waste water and for the treatment of drinking water; Crystallisation installations for the treatment of waste water and for the treatment of drinking water; Thickeners for sludge treatment in the context of waste water treatment; Membrane filter installations for the treatment of waste water and for the treatment of drinking water; Water conditioning; Conditioning of cooling water; Filter installations; Filters for the treatment of waste water and for the treatment of drinking water; Parts and accessories for all the aforesaid goods, included in this class
37
Maintenance and repair of waste water treatment installations and drinking water treatment installations, and of measuring, control and regulating devices
42
Technical project studies; Technical consultation and research; Laboratory services; Laboratory testing services; Chemistry services