UNSPSC 41113120: Carbon monoxide analyzer

An instrument used to measure carbon monoxide(CO) in gas.

UNSPSC 41113120 Carbon monoxide analyzer is a Commodity code that covers gas measurement and calibration equipment used in environmental monitoring and laboratory applications, though the recent solicitations show significant scope divergence from the code's nominal title. State and local purchasing under this code encompasses gas flow calibrators, mass flow terminals, zero air generators, and related analytical instrumentation parts rather than standalone carbon monoxide detectors. The issuing bodies are primarily state environmental agencies and municipal utilities—the Texas Commission on Environmental Quality appears twice with major air monitoring equipment procurements, the Illinois Environmental Protection Agency has issued small-purchase sole-source awards, and the Eastern Municipal Water District in California solicited meter verification and calibration services. Scope of work ranges from precision laboratory equipment with NIST traceability requirements (gas flow calibrators maintaining 0.01 percent measurement uncertainty) to maintenance and parts supply for deployed air quality monitoring networks (Teledyne-API sensor boards, flow controllers, filter assemblies) and emergency-response calibration systems (mass flow terminals for secondary equipment verification).

Recent activity concentrates in Texas and Illinois. The Texas Commission on Environmental Quality issued RFB 582-26-15780 for gas flow calibrators with a July 7, 2026 response date, specifying Mesa Metrology Series ML-800 equipment with EPA gas verification protocol compliance and delivery within 60 days to its Austin facility at 12100 Park 35 Circle, Building B. The same agency previously solicited a Fluke Electronics Molbox2-A700K mass flow terminal under RFB 582-26-15424 with a March 31, 2026 deadline. Illinois EPA procured four Model 1001C Zero Air Generators and four Portable Zero Air Generators through sole-source award to Sabio Environmental, LLC, totaling $59,100 and effective March 3, 2026. Illinois also issued a small-purchase sole-source procurement for Teledyne-API OEM replacement parts (sensor boards, flow controllers, valve assemblies) valued at $43,780 with a March 9, 2026 deadline. Activity in California is sparse—Eastern Municipal Water District's July 15, 2026 RFP for meter calibration and repair services represents the only non-Texas, non-Illinois solicitation in the recent block. The code shows moderate recent activity but notable geographic concentration and heavy reliance on sole-source and limited-competition awards tied to specific manufacturer equipment and proprietary components.