The Ultra-RAE 3000 is a next-generation photoioniza-tion detector (PID) for compound-specific gas monitoring. The Ultra-RAE 3000 makes use of proprietary pre-filter tubes to measure specific gases such as benzene and butadiene. It is wire-lessly enabled, making it compatible with the industry-standard AreaRAE network for remote data measurement and collection. The UltraRAE 3000 uses the same detection technology as the ppbRAE 3000, with the ability to measure toxic compounds below 50 parts per billion (ppb). The UltraRAE 3000 is intended for use in many industrial environments including confined space entry, pre-screening during refineryand plant maintenance, hazardous material response, marine spill response, and refinery down-stream monitoring.