Summary of the FIRMS Inter-Laboratory Comparisons (ILC)
In the most recent FIRMS Network Inter-Laboratory Comparison of stable isotope measurements three test materials were distributed to 31 laboratories worldwide. The materials distributed were:
Laboratories were requested to perform 10 measurements for each element present (δ2H, δ13C, δ15N, δ18O) of each analyte.
Detailed results for the recent study have been circulated to participating laboratories and made available on this website (hyperlink). Results for previous ILCs have been published in a special edition of the Forensic Science Society’s Journal, Science and Justice dedicated to forensic applications of IRMS.