UNSPSC 41115612: Dissolved oxygen probes

UNSPSC 41115612 Dissolved oxygen probes, a Commodity code, covers atmospheric and water-quality monitoring instruments that state and local governments procure for facility safety and environmental compliance — specifically fixed-installation sensors, controllers, alarms, calibration materials, and replacement parts designed to detect hazardous gases including hydrogen sulfide, methane, oxygen depletion, chlorine, ammonia, ozone, chlorine dioxide, and carbon monoxide at water and wastewater infrastructure. Issuing bodies under this code include municipal water and wastewater departments, which often issue competitively sealed offers and impose small-business participation requirements tied to federal transit or environmental funding streams. The scope of work encompasses not only equipment supply but also installation assistance, testing, commissioning, documentation, operator training, and multi-year maintenance and stocking obligations, with contractors required to maintain local replacement-parts inventory and meet rapid-response delivery windows.

The City of Phoenix Water Services Department posted IFB 270435 on August 14, 2026, seeking atmospheric monitoring instruments for fixed installation at lift stations, headworks buildings, chemical storage rooms, confined space entry points, process basins, and underground vaults, with sealed offers due September 4, 2026. The solicitation imposed a Disadvantaged Business Enterprise–Neutral participation requirement and required contractors to comply with 49 CFR Part 26 small business subcontracting obligations under Federal Transit Administration guidelines. The five-year contract called for firm-and-fixed pricing for the initial year, with annual price increases thereafter on 60 days' written notice; award was to be made to the lowest responsive and responsible offeror, with the City reserving the right to award by line item, in groups, or to multiple contractors. A non-mandatory pre-offer conference was scheduled for August 25, 2026, via WebEx, and written inquiries were due by September 1, 2026.