... of airport, train station, subway, gymnasium,important government office,boarder,and seaport Liquid Scanner -- Model: ST1000* Identify chemical composition of liquids ... , kerosene, diesel oil , hydrochloric acid , sulfuric acid , nitric acid , sodium hydroxide , potassium hydroxide , isopropyl ether , petroleum ether, propionaldehyde, benzene, carbon disulfide, hexane ...