... acid , sulfuric acid , nitric acid , sodium hydroxide , potassium hydroxide , isopropyl ether , petroleum ether, propionaldehyde, benzene, carbon disulfide, hexane, isopropanol, nitromethane, diethylamine , tris the ... Alarm for dangerous liquid Red LED alarm light & long beepSingle for safe liquidGreen LED light & short beepPower on time 2 seconds Identify ...