Forensic Isotope Ratio Mass Spectrometry

"... helping you get your IRMS analysis right"

 

Isotope Ratio Mass Spectrometry (IRMS) is a specialised technique that precisely measures small differences in the abundances of isotopes such as 2H/1H, 13C/12C, 15N/14N, and 18O/16O. Subtle variations to the ‘natural’ abundance of these isotopes may be introduced during biological, chemical, and physical processes. These changes enable the differentiation of materials that may not be separated by traditional analytical techniques - meaning that IRMS is used in many fields, including archaeology, medicine, geology, food authenticity, and forensics. We recognise the importance of getting it right. Participation in the FIRMS proficiency testing scheme helps laboratories demonstrate competence in this analytical technique. The scheme is supported by the FIRMS Network, which provides input on the choice of test materials and scheme performance.