---
title: "N2O Liquid Phase Monitoring Devices"
ocid: "ocds-h6vhtk-078702"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-078702"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-078702.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-078702.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "YORKSHIRE WATER SERVICES LIMITED"
published: "2026-10-14"
---

# N2O Liquid Phase Monitoring Devices

Buyer: YORKSHIRE WATER SERVICES LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-078702

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## Summary

Yorkshire Water Services Limited is procuring liquid-phase nitrous oxide (N₂O) monitoring equipment for its wastewater treatment operations. The package covers sensor probes, controllers, calibration equipment and accessories, together with manufacturer support. The devices will continuously measure dissolved N₂O concentrations and temperature in activated sludge process lanes, collecting data for baseline establishment and operational performance assessment. The equipment must support continuous data collection and integration with telemetry and control systems, and meet Yorkshire Water’s technical and environmental requirements. Quantities will vary according to site-specific designs and monitoring needs. Delivery is to 13 Yorkshire Water wastewater treatment sites. Yorkshire Water, rather than the equipment supplier, will undertake installation and commissioning, either directly or through a delivery partner contracted under an existing framework.

The procurement is complete and awarded through a direct award to Unisense Environment A/S, the original equipment manufacturer. Yorkshire Water states that market engagement identified this manufacturer as the sole supplier able to provide the devices, which had been tested in the UK water industry; the approach was changed from a managed service to direct supply to support collaboration on future development. The award is pending. Its value is £1.5 million excluding VAT (£1.8 million including VAT). The contract period runs from 23 October 2026 to 22 October 2031, with signature scheduled for 23 October 2026. There is one lot. The award concerns pollution-monitoring devices, evaluated through the direct-award route on technical grounds.

For suppliers assessing comparable future demand from Yorkshire Water, this award shows a requirement for specialist N₂O monitoring equipment for wastewater treatment, rather than a bundled installation service. A credible competitor would need to manufacture or supply equipment that continuously measures dissolved N₂O and temperature in activated sludge process lanes, supports telemetry and control-system integration, and meets the buyer’s technical and environmental requirements. Sensor probes, controllers, calibration equipment, accessories and ongoing manufacturer support form the relevant supply capability. The buyer’s stated reliance on original-manufacturer supply and its reference to testing in the UK water industry indicate that manufacturer status and evidence that equipment performs in water-industry settings are commercially important. Delivery across 13 sites and site-dependent equipment configurations also favour suppliers able to tailor quantities and coordinate supply across a multi-site wastewater operation.

## Notice

Supply of liquid-phase nitrous oxide (N2O) monitoring equipment and associated calibration equipment for use at Yorkshire Water wastewater treatment sites. The equipment will provide continuous monitoring of dissolved N2O concentrations and temperature within activated sludge process lanes and includes sensor probes, controllers, calibration equipment, associated accessories and manufacturer support. Equipment must be supplied directly by the original equipment manufacturer and is required to enable the collection of N2O monitoring data for baseline establishment and operational performance assessment. The equipment must support continuous data collection, integration with telemetry and control systems, and operation in accordance with Yorkshire Water's specified technical and environmental requirements. Equipment will be supplied to 13 wastewater treatment sites. The quantity of sensors, controllers and associated equipment required will vary by site in accordance with the site-specific design and monitoring requirements. Installation and commissioning will be undertaken by Yorkshire Water, or through a separately contracted delivery partner under an existing framework agreement.

### Procurement Information

This contract is awarded as we engaged the market under a UK2 notice for a managed service but pivoted from the approach due to the need for a direct contract with the manufacturer, offering improved collaboration on potential future developments. Through the market engagement, we confirmed there is a single manufacturer capable of direct supply for liquid phase N2O monitoring devices which have been tested in the UK Water industry.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/096760-2026 |
| Notice type | UK5 - Transparency Notice |
| Procurement type | Framework |
| Procurement category | Goods |
| Procurement method | Direct |
| Procurement method details | Direct award |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Oct 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 23 Oct 2026 - 22 Oct 2031 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £1,500,000 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Pending |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | YORKSHIRE WATER SERVICES LIMITED |
| Locality | LEEDS |
| Postcode area | Leeds |
| Postcode | LS10 1AB |
| Country | England |
| ITL 1 | TLE Yorkshire and The Humber |
| ITL 2 | TLE4 West Yorkshire |
| ITL 3 | TLE42 Leeds |
| Local authority | Leeds |
| Electoral ward | Hunslet & Riverside |
| Westminster constituency | Leeds South |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | Unisense Environment A/S |

## CPV Codes

### Divisions

- 38 - Laboratory, optical and precision equipments (excl. glasses)

### Codes

- 38344000 - Pollution-monitoring devices

## Release History

- 14 Oct 2026 at 07:07 - Award - UK5 - Transparency Notice - https://www.find-tender.service.gov.uk/Notice/096760-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/096760-2026
  14th October 2026 - Transparency notice on Find a Tender

## Notice URLs

- https://unisense-environment.com/
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-078702. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-078702.json.