Chemicals for use in purification of water; Chemicals for the treatment of water and wastewater; Chemicals for use in desalination of water and water reclamation; Chemical preparations for use in soil remediation, drinking water treatment, municipal and industrial wastewater treatment; Chemicals for the treatment of cooling water, boiler and domestic drinking water systems; Chemicals for use in industry; Chemical preparations for cleaning and purification purposes in the food and food processing industries. Chemical additives for drilling muds; mineral products, namely, silica dioxide for use as proppants in the oil and gas industry; chemicals for the treatment of irrigation water; chemical preparations containing fertilizers for use in agriculture, horticulture, turfgrass; reagents for the processing, separation, isolation, enrichment, depletion, detection, screening, cultivation, analysis and counting of material, in particular of chemicals and biological material, all for scientific or research purposes; buffer solutions and reagents for use with laboratory apparatus, namely, separation apparatus and analysis apparatus, for scientific or research purposes; chemical additives, enzymes, reagents, organisms and proteins for use in science, research and industry