42 Scientific and technological services, namely, research, testing, analysis and flow-sheet design and scientific, technological, and industrial research and design all in the field of chemistry and chemical separation techniques, namely, chemical processes, chemical separations, molecular recognition technology, chromatography, precipitation, filtration, distillation, chelation, solvent extraction, ion exchange, crystallization and electrolysis; consultation services in the field of chemistry and chemical separation techniques, namely, chemical processes, chemical separations, molecular recognition technology, chromatography, precipitation, filtration, distillation, chelation, solvent extraction, ion exchange, crystallization and electrolysis; industrial design services; scientific research consultation