Published date: 16 August 2022

Closed opportunity - This means that the contract is currently closed. The buying department may be considering suppliers that have already applied, or no suitable offers were made.


Closing: 30 August 2022, 5pm

Contract summary

Industry

  • Laboratory, optical and precision equipments (excl. glasses) - 38000000

Location of contract

TW11 0LW

Value of contract

£0

Procurement reference

tender_314613/1098334

Published date

16 August 2022

Closing date

30 August 2022

Closing time

5pm

Contract start date

20 September 2022

Contract end date

31 March 2023

Contract type

Supply contract

Procedure type

Competitive quotation (below threshold)

The buyer selects a group of potential suppliers to invite to tender.

This procedure can be used for procurements below the relevant contract value threshold.

Contract is suitable for SMEs?

Yes

Contract is suitable for VCSEs?

Yes

Description

The National Physical Laboratory [NPL] requirement is for a gas chromatography system for the quantitative analysis of ammonia in biomethane. The purpose of the system is to analyse reference gas standards and low-volume samples at close to atmospheric pressure.

The system must be able to provide matrix independent quantification of the following measurands within a single analytical method:

Measurand Limit of quantification required (μmol/mol) Repeatability of measurement at 10 μmol/mol (%)
Ammonia ≤10 ≤5

Notes:
1. It is important to note that the specification is for the qualification limit, and not a detection limit.

2. The repeatability of the measurement of ammonia at 10 μmol/mol is required to be ≤5%.

3. The expected matrix gases are as follows:
Methane, ethane, propane, carbon dioxide, nitrogen, hydrogen, oxygen, water, terpenes, siloxanes, amines.
These should not interfere with the measurement of ammonia within the measurement method.


It is beneficial (optional requirement) if the system is also capable of measurement of any of the following to ≤1% repeatability within the same method as the ammonia measurement:

Measurand Range of quantification required (cmol/mol)
Methane 1 - 100
Carbon dioxide 1 - 100
Carbon monoxide 0.1 - 1.0
Nitrogen 1 - 100
Hydrogen 1 - 25
Oxygen 0.001 - 20
Ethane 0.002 - 100
Propane 0.002 - 100
Terpenes < 0.01
Siloxanes < 0.01
Amines < 0.001

Requirement is for quantity of one.

More information

Links

Additional text

The Authority is using the LUPC Bravo e-Procurement portal to conduct the procurement process. All Suppliers must register their company via the LUPC Bravo Portal.

About the buyer

Contact name

Nina Heath

Address

Hampton road
Teddington
TW11 0LW
England

Email

nina.heath@npl.co.uk