The SmartBio Sensor from Smiths Detection of Pine Brook, New Jersey, is a real-time detector for biological agents and airborne toxins. Developed for field use in military environments, the unit provides a visual or audible alarm when a threat is detected and classifies the agent by threat category. In civilian settings, it can be used to protect public venues. The sensor takes continuous samples of the air, trapping bio-agents and classifying the threat. Bio-agents are retained for confirmatory analysis and archiving. The device also has an onboard particle counter to maintain a low response to natural chemical and biological substances in the air. The portable unit has low power requirements and doesn’t depend on additional reagents.