Chem. RAE is the latest in state-of-the-art hand-held Chemical Warfare Agent detection and identification systems. It is RAE Systems' next generation sensor technology based on tested and proven Open Loop Ion Mobility Spectrometry (IMS) technology. The Chem. RAE uses an improved Ion Mobility Cellâ„¢, which provides enhanced selectivity and sensitivity. It is designed to detect Chemical Warfare Agents (CWAs) and toxic industrial chemicals (TICs).