Submission of results from the 43rd laboratory intercomparison
The deadline for submitting results from the 43rd laboratory intercomparison is Thursday December 18th, 2025.
The submission forms were updated last year, and will send a confirmation e-mail to the address provided.
Please contact us if you do get not the e-mail, as we most likely have not recieved your results.
Values below detection limit should now be reported with a minus sign, as in -0.02 for a dection limit of 0.02.
- Report numerical values and use only the units indicated in the data entry form
- Please check unit of measurements and numerical values to avoid calculation and typing errors
- When a measurement is below the detection limit of your laboratory´s analytical method, please report your detection limit preceded by a minus sign, such as -0.05
- Blank samples: please report the instrument reading if the result is above your detection limit. If your analytical instrument reading is zero or a value below your detection limit, please report your detection limit as described above
- C-samples: please read and follow the special instruction for the synthetic samples of nitrogen dioxide. The results are to be reported as the concentration of NO2-N in ug/ml in the 10 times diluted sample
- If your laboratory is missing on the list, please contact Katrine Pfaffhuber for a laboratory number
If you have any questions, please contact Katrine Pfaffhuber concerning the intercomparison or Anne Hjellbrekke for technical issues.
Submission forms: