Source: https://tendernation.io/opportunities/01a13bd0-5c31-70c5-a251-06c332c4e71c/lithium-trace-testing [Skip to main content](#main-content) awardedGBopen procedureSuitable for SMEs # Lithium Trace Testing [United Utilities Water Limited](https://tendernation.io/buyers/united-utilities-water-limited) Estimated value £1,250,000 Published 20 Jul 2026 Deadline Closed 22 Jun 2026 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still 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. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](/opportunities/for-small-businesses)## About this tender The Bioresource and Energy Services team require non-intrusive tank capacity and sediment assessments of Anaerobic Digesters using Lithium chloride as a trace element to comply with Environmental Permitting (England & Wales) Regulations 2016 implementing the Industrial Emissions Directive (IED) every 5 years, which takes an integrated approach to controlling pollution to air, water, and land from industrial activities. We require the supplier to develop methodology to determine the effective volume of an anaerobic digester over a short period of testing time. The effective volume should be calculated from the lithium concentration once it reaches a steady and consistent level. The calculation for effective volume should be based on the dose of lithium chloride added, the concentration of lithium, and the background concentration established before the test is initiated. The results of the data should establish the following, and be presented within a report: Mixing efficiency Hydraulic retention time (HRT) Short‑circuiting or dead zones Sediment/grit accumulation The lithium chloride is to be dosed into each digester’s feed line, or other suitable position. Prior to the dosing of lithium chloride, initial samples should be taken from each digester in order to establish the background lithium concentrations. Samples should be taken from designated sampling points, identified during a pre-test site visit. Read full description ## CPV classification Laboratory services Source Find a Tender (UK) · Notice ocds-h6vhtk-05e500-2026-07-20T12:01:50+01:00 [View official notice ](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-05e500-2026-07-20T12:01:50+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 ](/register) [Buyer profileUnited Utilities Water Limited: past awards and live tenders](https://tendernation.io/buyers/united-utilities-water-limited)[SectorMore Architecture, engineering & surveying tenders](https://tendernation.io/sectors/architecture-engineering-surveying) ## More tenders like this [Vacuum Pump Tritium Testing UK Atomic Energy Authority 30 days left 16 Nov 2026](https://tendernation.io/opportunities/01a1464c-dd0c-72ed-b7bd-bac1e52155ab/vacuum-pump-tritium-testing)[Mechanical and Electrical Consultant Tender University Hospitals of North Midlands NHS Trust 37 days left 23 Nov 2026](https://tendernation.io/opportunities/01a145df-0fba-7085-98fc-1c9389531130/mechanical-and-electrical-consultant-tender)[Asbestos Surveys Northamptonshire Partnership Homes 27 days left 13 Nov 2026](https://tendernation.io/opportunities/01a14571-3963-732e-a081-bef649a3206b/asbestos-surveys)[Design Lead for Christchurch Learning Centre School Satellite Bournemouth, Christchurch and Poole Council 31 days left 17 Nov 2026](https://tendernation.io/opportunities/01a14503-59e7-72ad-900a-82eaae1a3048/design-lead-for-christchurch-learning-centre-school-satellite)[Penistone Station - Independent Assessor Barnsley Metropolitan Borough Council 26 days left 12 Nov 2026](https://tendernation.io/opportunities/01a14495-7973-71c1-9c37-1ba8178069cf/penistone-station-independent-assessor)[CA18575 - RFQ 2026/42 - Conservation Engineer for St Paul's Church The Crag Cemetery Rostrevor Newry, Mourne and Down District Council (NMD) 27 days left 13 Nov 2026](https://tendernation.io/opportunities/01a144b0-e0b5-70b1-a4eb-e5b6dc8d3bbe/ca18575-rfq-202642-conservation-engineer-for-st-pauls-church-the-crag-ceme)