---
title: "Purchase of SMPS (Scanning Mobility Particle Sizer)"
ocid: "ocds-b5fd17-f3eb5929-a648-4138-94e2-30bc12dac46b"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-f3eb5929-a648-4138-94e2-30bc12dac46b"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-f3eb5929-a648-4138-94e2-30bc12dac46b.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-f3eb5929-a648-4138-94e2-30bc12dac46b.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "DEFRA NETWORK ETENDERING PORTAL"
published: "2021-11-25"
---

# Purchase of SMPS (Scanning Mobility Particle Sizer)

Buyer: DEFRA NETWORK ETENDERING PORTAL  
Current stage: Award  
OCID: ocds-b5fd17-f3eb5929-a648-4138-94e2-30bc12dac46b

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## Summary

The procurement process involves the purchase of a Scanning Mobility Particle Sizer (SMPS) by the Defra Network eTendering Portal, which is responsible for managing the contract on behalf of the UK government. This procurement falls within the air quality management industry category and is located in the United Kingdom. The procurement method employed is a direct approach through a single tender action. The tender period concluded on 10th November 2021, and the contract began on 11th November 2021, with an estimated total contract value of £277,755 set to run until 31st March 2022.

This contract presents an excellent opportunity for businesses specialising in environmental monitoring equipment, particularly those capable of providing advanced air quality measurement solutions. Companies that develop or distribute technologies compliant with updated environmental standards would be particularly well-suited to compete. Given the requirement for urgent compliance with UK air quality legislation and the shift in monitoring standards, there is significant potential for market growth in this sector, especially for small and medium enterprises (SMEs) which can offer innovative solutions.

## Notice

The SMPS (Scanning Mobility Particle Sizer) is used to measure aerosol concentration and aerosol particle size distribution. The system comprises of an Electrostatic Classifier (EC), a Differential Mobility Analyser (DMA), a Condensation Particle Counter (CPC), and an Aerosol Neutraliser. They have been identified needing replacement in 2021-22 because there are no longer spare parts available from the manufacturer, and they are nearing the end of their useful life. They are difficult to communicate with as the technology for their communication systems is out of date and cannot be upgraded. We would not be compliant if they fail completely with Current UK Air Quality Legislation, which asks for information on the total mass concentration of particulate matter, and also for the purpose of the European Monitoring and Evaluation Programme (EMEP - part of the Convention on Long Range Transboundary Air Pollution (CLRTAP) which requires monitoring of particle number concentration). In addition to the replacement of the components, a new sampling system is also required with driers and splitters that will replace the current system. Historically the old system has not performed and data capture loss is high. Additional a Butanol stripper will be purchased that will improve the life of the pump and minimise risks to the site users as Butanol will no longer be at risk of 'leaking' from the outlet pipes that should be vented outside the cabin, as it will be stripped as part of the sampling process. This has historically caused unwelcome smells for site users and interfered with other measurements. The National Monitoring -Contracts, Monitoring Survey Team manage the Operational contracts on behalf of DEFRA on the PCN (Particle Size and Concentration) Network run by NPL (National Physical Laboratory) and Imperial College London - who will be able to deliver their management contract with the new equipment to a higher standard and with far less data loss than currently. The upgrade is also well time for a change in the standard monitoring CEN standard which will result in a change of 'cut off' from 7nm to 10nm for measurements. The replacement will be for all 3 existing locations. Only TSI currently offer this new CEN Condensation Particle Counter component complies with CEN/TS 16976 and another Differential Mobility Analyser component complies with ISO 15900:2020.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/c1a8caff-e236-4db1-8e9c-a2c43fb0f1be |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Direct |
| Procurement method details | Single tender action (below threshold) |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 25 Nov 2021 |
| Submission deadline | 10 Nov 2021 |
| Future notice date | Not specified |
| Award date | 10 Nov 2021 |
| Contract period | 11 Nov 2021 - 31 Mar 2022 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £277,755 |
| Lots value | Not specified |
| Awards value | £268,390 |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | DEFRA NETWORK ETENDERING PORTAL |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW1P 3JR |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI35 Westminster and City of London |
| Local authority | Westminster |
| Electoral ward | St James's |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | TSI INSTRUMENTS |

## CPV Codes

### Divisions

- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 90731100 - Air quality management

## Release History

- 25 Nov 2021 at 14:42 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/c1a8caff-e236-4db1-8e9c-a2c43fb0f1be

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/c1a8caff-e236-4db1-8e9c-a2c43fb0f1be
  25th November 2021 - Awarded contract notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/68bd6bd4-9b34-44e4-a790-b4035218ef5c
  n/a

## Provenance

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