42 Design for others in the field of detection and identification apparatus for testing gas, liquids and solids, namely, detecting the presence of biological, chemical or biochemical gases, liquids and solids in medical diagnostic, military, government, scientific, industrial and commercial applications; advisory services in the field of product development of detection and identification apparatus for testing gas, liquids and solids, namely, detecting the presence of biological, chemical or biochemical gases, liquids and solids in medical diagnostic, military, government, scientific, industrial and commercial applications; technical consultancy regarding the field of detection and identification apparatus for testing gas, liquids and solids, namely, detecting the presence of biological, chemical or biochemical gases, liquids and solids in medical diagnostic, military, government, scientific, industrial and commercial applications