The Earth System Center for Stable Isotopic Studies, ESCSIS, a Yale Institute for Biospheric Studies research center, is a facility for the study of light stable isotopes, mainly 13C, 15N, 18O, and D/H, at Yale University. Researchers have access to five stable isotope ratio mass spectrometers with associated peripherals.
The YIBS Earth System Center for Stable Isotope Studies was established with the completion of the stable isotope facility in Class of 1954 Environmental Science Center (ESC). The Center is devoted to the study of the environment using the latest technology and ideas in light stable isotope research, and serves as a meeting point for both Yale and external scientists to exchange ideas and develop new approaches to the study of the environment.