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Forensic Isotope Ratio Mass Spectrometry (FIRMS)

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 otherwise may not be separated, such that IRMS is used in many fields, including archeology, medicine, geology, food authenticity and forensics.
Participation in our FIRMS scheme helps laboratories demonstrate competence in this analytical technique. The scheme is operated by LGC Proficiency Testing and is supported by the FIRMS Network, which provides input on the choice of test materials and scheme performance.

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ISO/IEC 17043
ISO 9001

Scheme Information

Round

Despatch Date

Reporting Deadline

FM275

18 March 2019

26 April 2019

FM279

29 July 2019

06 September 2019


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