... station, subway, gymnasium,important government office,boarder,and seaport Liquid Scanner -- Model: ST1000* Identify chemical composition of liquids ... , aluminum, plastic, glass, porcelain, china, pottery.Identify dangerous liquid More than 30 types: Gasoline, kerosene, diesel oil , hydrochloric ... Other container: 60mm from bottom Alarm for dangerous liquid Red LED alarm light & long beepSingle for safe ...