EffecTech’s Stack Emissions Proficiency Testing Scheme has been described as “excellent all round” and has participants in the UK and Ireland as well as in the rest of Europe and Asia.

 2025 SEPTS scheme

  • The 2025 SEPTS scheme is now closed for applications. Enrolment for next year’s scheme will open in early 2026.
  • Missed SEPTS for this year? You could participate in an on-demand proficiency testing scheme,  in which gas mixtures are provided for ‘blind’ measurement. On-demand schemes are available for sulphur, hydrocarbons and emissions testing.

For more information, please contact us

More information about SEPTS

   SEPTS frequency and benefits

The 2024 SEPTS report can be downloaded here:

 SEPTS Final Report 2024

Mixture typesAmount fraction range (%mol/mol)
oxygen in nitrogen2 to 14
carbon dioxide in nitrogen1 to 10

 

Mixture typesAmount fraction range (μmol/mol)
sulphur dioxide in nitrogen10 to 200
propane in 10% oxygen / nitrogen5 to 50
nitric oxide in nitrogen10 to 500
carbon monoxide in nitrogen20 to 500
NO/NO2 in nitrogenNitric oxide (NO)20 to 400
Nitrogen oxides (NOx)25 to 500

Reporting
Participants are required to report the composition and an estimate of the uncertainty of the gas where appropriate using the reporting template.

Evaluation

Evaluation will be using ISO 17043 approved methods including En ratio and Z scores.

Confidentiality

As mandated by ISO 17043, all data including participants and performance will be kept strictly confidential. Only the submitting laboratory will receive feedback on their performance. Performance data will be reported to the whole group anonymously.