The IN-2000-L2-LC from IN-USA Inc., Norwood, MA, is an ambient/safety ozone analyzer designed for use in the food, beverage, pharmaceutical, and other industries. The sensor uses UV absorption to continuously measure low concentrations of ozone in the gas phase. Features include accurate and stable readings down to ppbv levels; measurement ranges from 0–1 ppm and 0–10 ppm, with higher ranges available on a custom basis; and traceability to NIST standards. The analyzer is typically installed in areas around ozone generators, contact chambers, post-destruct units, and gas delivery systems.