Round robin tests

Round robin tests or inter-laboratory comparison tests (ILCs) in chemical analysis are an important means of quality control. Laboratories accredited in accordance with EN ISO 17025 are required to participate in such studies on a regular basis. The successful participation in ILCs is a prerequisite for accreditation or the continued validity thereof.
In such tests, an individual laboratory can compare its own results from the analysis of a particular sample with the results of a group of other laboratories and thus obtain information about the performance of their own methods.


The IAG round robin test is an international laboratory performance test which is conducted once a year and includes two samples.



ALVA – Austrian Association of Food, Veterinary Science and Agriculture 



Under the roof of the International Analytic Group (IAG) the Austrian Agency for Health and Food Safety (AGES) and the Swiss centre of excellence for agricultural research (AGROSCOPE) organize a proficiency test with nine different samples for selected parameters by NIRS.