Participation in interlaboratory comparisons enables you to evaluate the performance of your work and obtain data for maintaining the quality system in your laboratory. Based on the obtained independent results, you can monitor your processes, evaluate them and ultimately improve them.
Interlaboratory comparisons are performed in accordance with the international standard ISO 17043 - Determination of conformity - General requirements for testing professional competence.
To participate in the interlaboratory comparison, you can register with an annual order form Open in new window, which you send to the address .
NEW!! Catalogue for proficiency testing 2026 Open in new window Open in new window
From the table below, you can download forms for entering results and reports for individual measurements. Save the form, fill it out and send it to us by e-mail.
| Form | Reports 2026 | Reports 2025 |
| PT BSC IBC March 2026 Open in new window | ||
| PT IR March 2026 Open in new window | ||
| PT SCC March 2026 Open in new window | ||
| PT Urea March 2026 Open in new window | PT Urea March 2025 Open in new window (Slovenian) PT Urea November 2025 Open in new window (Slovenian) | |
| PT Freezing Point March 2026 Open in new window (Slovenian) | ||
| Total bacteria count (SET 6) | PT TBC 30 °C March 2026 Open in new window (Slovenian) | |
| Probiotics | The report is received by each participant by e-mail | The report is received by each participant by e-mail |
We will organize the next interlaboratory comparison in November 2026.