# Asymmetric Field-Flow Fractional System

> Contract award record from UK public-sector procurement sources.

## Key facts

- Public buyer: [UNIVERSITY OF SHEFFIELD](/buyers/university-of-sheffield/contract-awards)
- Contract winner: Postnova Analitics Ltd
- Award value: £85,000
- Tender value: £85,000
- Award date: 2 August 2017
- Published: 7 August 2017
- Contract start: 2 October 2017
- Contract end: 3 October 2017
- Stage: awarded
- Procurement category: goods
- Notice ID: 2d0b96f8-1bf7-4b7a-a687-11b819755083-164118
- OCID: ocds-b5fd17-6b9c788a-e973-44de-8ac4-1ac71d096605

## Description

As part of a research project funded by the BBSRC, a unique liquid-phase separation system is required to analyse and detect molecular species formed during the aggregation of the peptide amyloid beta 1-42\. The AF4 system together with UV/Vis and RI detector must be capable of separating and quantifying species with a wide range of molecular weights, as well as being able to do this at low concentrations and with the minimum disruption to the concentration of the injected sample to maintain a similar distribution of aggregates during the analysis\. To enable this, the system must be able to be connected to an exisiting MALS detector, namely a Wyatt Dawn DSP \(1998 model\)\.

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## Source

[View the original notice on Contracts Finder](https://www.contractsfinder.service.gov.uk/Notice/2d0b96f8-1bf7-4b7a-a687-11b819755083-164118)