The Center for Stable Isotope Biogeochemistry (CSIB) is an analytical facility established as a University education, research, training and service unit. Facility operations are overseen by an operations manager and spectroscopist (Wenbo Yang), the faculty director (Todd Dawson), an associate researcher (Stefania Mambelli), and a steering committee. The center provides high precision, state-of-the-art, and instrumentation for analyzing the stable isotope composition of a diverse array of materials (e.g., plant and animal tissues samples, soils, rocks, atmospheric gasses, water, etc.) as well as space for purifying, extracting and preparing sample material for analysis. Located in rooms 1138 and 1140 of the Valley Life Sciences Building, the Center for Stable Isotope Biogeochemistry maintains and operates four Isotope Ratio Mass Spectrometers (IRMS) and several interfaces for the measurement of the isotopic composition of hydrogen, carbon, oxygen, nitrogen and sulfur in biological and geological samples, gases (biogenic and atmospheric), water and chemical mixtures, and three optical based systems for the measurement of stable isotope ratios of hydrogen and oxygen in water and water vapor. In addition to the instrument laboratory, the center houses a fully equipped sample extraction and preparation laboratory for handling a full range of sample types. The specialized equipment housed in the facility serves student, post-doc and faculty research.