1
Chemicals used in industry, science, photography, as well as in agriculture, horticulture and forestry; chemical and biological products and preparations for the treatment of sewage; chemical and biological products for the treatment of waste water; chemical and biological products for the control of environmental pollution; chemical and biological spill control products for bioremediation; chemical and biological products used in industry and science; powder and liquid based natural micronutrients and biocatalysts for the degradation of food industry effluents and residues, including fats, oils and greases; parts and fittings for the aforementioned goods
7
Machines and machine tools; apparatus for sewage disposal and sewage treatment; parts and fittings for all the aforementioned goods
11
Appartus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; apparatus and installations for the treatment of water and waste water; apparatus and installations for purifying, settling or filtering water; installations for the recycling of waste water; chlorination plants; chlorination equipment; apparatus and installations for the treatment and purification of sewage; lighting and heating apparatus and installations; filtering apparatus; water treatment systems mainly consisting of mechanical or biological filters, in particular including anaerobic filters; protein skimmers; refrigerating appliances and installations; swimming pool and spa equipment; water sterilizers; sludge treatment apparatus and instruments; parts and fittings for all the aforementioned goods