# deaerating unit

> Tender notice from UK public-sector procurement sources.

## Key facts

- Public buyer: [UNIVERSITY OF SOUTHAMPTON](/buyers/university-of-southampton/contract-awards)
- Tender value: £28,000
- Published: 16 November 2020
- Planned start: 26 February 2021
- Planned end: 26 February 2022
- Stage: open_tender
- Procurement category: goods
- Notice ID: df49c4af-1346-445a-8ad0-3088805038d5-393577
- OCID: ocds-b5fd17-4852fa4f-6023-4682-8d83-2b0abc590fae

## Description

This tender concerns the design, construction and commissioning of a deaerating unit for the Refractive Index Matched \(RIM\) Flow Facility\. The working fluid is a highly concentrated solution of Sodium Iodide, 60% in mass, whose index of refraction can be adjusted to match that of solid objects that are made of different types of plastics\. Temperatures range from 15 to 25°C\. Since iodide is a mild reducing agent, it reacts with the dissolved oxygen to give iodine and, as a result, the triiodide anion, which causes the solution to become yellow at low concentrations and red-brown at high\. This has a negative impact on the quality of the optical measurements that are carried out\. Therefore, a deaerating unit is essential to reduce the dissolved oxygen concentration and reverse the reaction\.

## Related contract awards

- [English Language Print Books for Library Stock](/contracts/ocds-b5fd17-cdf2db0a-f046-4de7-beff-d85e0c115758): UNIVERSITY OF SOUTHAMPTON
- [Qlik Licences](/contracts/ocds-b5fd17-0feb1a9d-c1b1-4304-b554-33ede99389d1): UNIVERSITY OF SOUTHAMPTON
- [Provision of Cognos Licences](/contracts/ocds-b5fd17-90b5ef66-0877-46d1-b0a9-841eff154617): UNIVERSITY OF SOUTHAMPTON

## Source

[View the original notice on Contracts Finder](https://www.contractsfinder.service.gov.uk/Notice/df49c4af-1346-445a-8ad0-3088805038d5-393577)