IRMS provides analysis of isotopic ratios of the light stable isotopes C, N, 0, S and H. Our IRMS instrumentation is renowned in many areas. Earth sciences; paleoclimatology and paleoceanography, as well as climatology and atmospheric science. Environmental research; ecology including trophic levels in ecosystems, tracking of animal migration. Biomedical science: total body water, energy expenditure. Food adulteration and provenance.