Submission of results from the 44th laboratory intercomparison
Deadline
The deadline for submitting results from the 44th laboratory intercomparison is Thursday December 22nd, 2026.
E-mail confirmation
The submission forms should 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
When a measurement is below the detection limit of the 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 preceeded by a minus sign
C samples
Please follow the special instruction for the synthetic samples of nitrogen dioxide. The results are to be reported as the concentration of NO2 in ug N/ml in the 10 times diluted sample
Laboratory codes
If your laboratory is missing on the list, please contact Katrine Pfaffhuber for a laboratory number
Units
Report numerical values and use only the units indicated in the data entry form. For nitrogen and sulfur compounds, similar to data submisson to ebas, results should be expressed as S and N:
| Component | Unit | Conversion factor to S/N | |
|---|---|---|---|
| B samples | SO2 | ug S/filter | 0.501 |
| HNO3 | ug N/filter | 0.222 | |
| C samples | NO2 | ug N/ml | 0.3045 |
| G samples | SO4 | mg S/l | 0.334 |
| NO3 | mg N/l | 0.266 | |
| NH4 | mg N/l | 0.777 |
Questions?
Please contact Katrine Pfaffhuber concerning the intercomparison or Anne Hjellbrekke for technical issues
Submission forms: