UNSPSC 41103310: Gas or vapour concentration measuring instruments

UNSPSC 41103310 Gas or vapour concentration measuring instruments is a Commodity code covering sensors, detectors, controllers, alarms, and related equipment that state and local governments purchase to monitor hazardous gases at facilities including water treatment plants, wastewater systems, detention centers, laboratories, and transportation infrastructure. The code captures both fixed atmospheric monitoring installations and portable or emergency-response detection systems. Issuing bodies include city water departments, county detention facilities, state environmental and laboratory agencies, and regional transit authorities.

Recent activity is concentrated in the West and Southwest. The City of Phoenix Water Services Department issued IFB-27-0435 in August 2026 for atmospheric monitoring instruments fixed at water and wastewater lift stations, headworks buildings, and confined spaces, requiring detection of hydrogen sulfide, methane, oxygen depletion, chlorine, ammonia, ozone, chlorine dioxide, and carbon monoxide from approved manufacturers including ATI, De Nora, Drager, and MSA; the Orange County Transportation Authority posted IFB 250322 in June 2026 for methane detection system service and maintenance across five facilities under a four-year prevailing wage contract valued at $260,000; and the California Department of Toxic Substances Control issued IFB I-2627-03 in July 2026 for specialty gas refill and maintenance supporting liquid argon and nitrogen microbulk tank systems at its Environmental Chemistry Laboratory in Pasadena. The Purchasing Cooperative of America's RFP OD-451-26 for emergency responders equipment (response due October 27, 2026) and the State of Texas RFP OD-451-26 reference emergency detection and monitoring capabilities available nationally and statewide, though specific gas-monitoring scope is not detailed in available documentation. Code activity remains relatively light; opportunities are project-based rather than recurring, and most recent work involves either long-term service contracts or turnkey installation with integrated support and training.