Source: https://tendernation.io/opportunities/01a13bbc-1c10-7253-8f3e-f1cfde2c6e8a/wastewater-nitrous-oxide-in-liquid-sensors-and-controllers pending GB restricted procedure # Wastewater Nitrous Oxide in Liquid Sensors and Controllers [United Utilities Water Limited](https://tendernation.io/buyers/united-utilities-water-limited) Estimated value £2,000,000 Published 30 May 2025 Deadline Rolling deadline ## Who can bid - Sets up a framework Winning a place does not guarantee work: contracts are awarded later as call-offs, and the list usually stays closed for years. ## About this tender UU are looking to source sensor equipment capable of detecting & measuring Nitrous Oxide in liquid. The requirement of detection in liquid is fundamental to this product; sensors for gas state do not meet this requirement. UU are looking for 120 sensors for immediate requirement, along with appropriate fitments, controllers, pipe mounting equipment, cabling and calibration kits. The initial requirement should also include consumables to run the sensors for 12 months. Our research shows probe heads have a usable lifespan of 6 months. There will likely be on ongoing requirement for spares and consumables for 5 years. Our market intelligence leads us to the conclusion there is only 1 suitable product on the market currently, from Unisense, shown here: [unisense-environment.com](https://unisense-environment.com/products/n2o-wastewater-sensor/) We are expecting the cost to come in at approximately £1M based on the product set from Unisense over 12 months. With a consumables requirement of a further £1M over the following 4 years. This notice is designed to test our sourcing intelligence with the market for competing product availability. ## CPV classification Pollution-monitoring devices Gas-detection apparatus Industrial process control equipment Source Find a Tender (UK) · Notice ocds-h6vhtk-052978-2025-05-30T11:04:40+01:00 [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-052978-2025-05-30T11:04:40+01:00) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile United Utilities Water Limited: past awards and live tenders](https://tendernation.io/buyers/united-utilities-water-limited) [Sector More Laboratory & precision equipment tenders](https://tendernation.io/sectors/laboratory-precision-equipment) ## More tenders like this [Laboratory, optical and precision equipments (excl. glasses) – Vodíkový polygon CEETe H2 / CEETe H2 Hydrogen Polygon · Vysoká škola báňská - Technická univerzita Ostrava · 18 days left · 6 Nov 2026](https://tendernation.io/opportunities/01a15183-14ee-7238-941c-57e426068058/czechia-laboratory-optical-and-precision-equipments-excl-glasses-vodikov) [Laboratory, optical and precision equipments (excl. glasses) – Supply, Delivery, Installation, Testing, Commissioning and Training for 3 Automatic Asphalt Extraction Devices, including all necessary accessories required for complete and fully operational systems · Public Works Department · 29 days left · 17 Nov 2026](https://tendernation.io/opportunities/01a15183-1c2c-7367-bb86-fdb6f5219ed7/cyprus-laboratory-optical-and-precision-equipments-excl-glasses-supply) [Parking meters – Parkautomaten · Landeshauptstadt Stuttgart, Haupt- und Personalamt, Abt. Allgemeiner Service, Zentraler Einkauf · 32 days left · 20 Nov 2026](https://tendernation.io/opportunities/01a15183-1396-70d0-82b5-dd09b1916cf7/germany-parking-meters-parkautomaten) [Laboratory, optical and precision equipments (excl. glasses) – Dostawa systemu obrazowania fluorescencyjnego na rzecz Instytutu Agrofizyki im. Bohdana Dobrzańskiego PAN w Lublinie · Instytut Agrofizyki IM.BOHDANA Dobrzańskiego Polskiej Akademii Nauk · 32 days left · 20 Nov 2026](https://tendernation.io/opportunities/01a15183-ceff-70be-b876-1f526e8d1cf5/poland-laboratory-optical-and-precision-equipments-excl-glasses-dostawa) [Laboratory, optical and precision equipments (excl. glasses) – Sprzedaż wraz z dostarczeniem sondy wieloparametrowej z elektrodami oraz pompy próżniowej · Uniwersytet Rzeszowski · 30 days left · 18 Nov 2026](https://tendernation.io/opportunities/01a15183-1441-70f4-a723-f4e57a503570/poland-laboratory-optical-and-precision-equipments-excl-glasses-sprzedaz) [Laboratory, optical and precision equipments (excl. glasses) – X-ray CT system for the analysis of rock and soil samples · ETH Zürich - Abt. Procurement & Export Services · 37 days left · 25 Nov 2026](https://tendernation.io/opportunities/01a15183-1c5a-739b-bb20-024917276057/switzerland-laboratory-optical-and-precision-equipments-excl-glasses-x-r)