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Cost for participation is £558 + VAT per site, for which participants will be sent one foil shim (from a choice of three different sizes) and one simulated probe washing.

The probe washings are accredited under ISO 17043 and will be in the range 1 mg to 20 mg.

Additional foil shims will be charged at £256.00 + VAT each.

(Please note that a charge for shipping by dangerous goods courier is included in this price for participants in mainland Great Britain, but that additional charges will be made for shipping to all other locations.)




Round Registration Opens 14th December 2022

Round 28 Registration Deadline

14th April 2023

Round 28 Sample Despatch

11th May 2023

Round 28 Results Submission

8th June 2023

Round 28 Report Issue

6th July 2023

Round Registration Opens 14th December 2022

Round 29 Registration Deadline

18th August 2023

Round 29 Sample Despatch

7th September 2023

Round 29 Results Submission

5th October 2023

Round 29 Report Issue

2nd November 2023


Companies participating in the Scheme will be listed the following year on this website. An option to opt out is available.