A typical EQA-Scheme includes the following steps:
- Registration for the EQA-Scheme
- Dispatch of the test samples to the participating laboratories
- Analysing the samples under routine conditions
- Transmission of the results to the EQA-Scheme provider
- Statistical analysis of all results
- Preparation of an evaluation report and certificate of participation
The exact procedure may vary depending on the type of EQA-Scheme and the speciality.
More about the process here.